Quality Assurance vs Quality Control - Six Sigma

If you’ve ever sat in a QA/QC meeting and heard someone throw around terms like “non-conformance” or “corrective action” as if they were speaking a secret language, you’re not alone.

ISO terms can feel dense, but they’re not bureaucratic fluff. Rather, they shape how we align quality practices with global standards.

Whether you’re dealing with audits, ISO certifications, or just keeping things running smoothly, mastering these terms can save you a ton of headaches.

So, let’s take a closer look at why ISO terms matter and how they can level up your QA/QC strategy. But before that, let’s brush up on the basics.

Understanding Quality Assurance and Quality Control

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At their core, Quality Assurance (QA) and Quality Control (QC) are about delivering consistent, high-quality results. However, they approach this goal from two distinct angles.

Here’s a quick comparison of quality assurance vs. quality control:

Quality Assurance (QA)

QA is the proactive side of quality management. It’s all about setting up processes, policies, and systems to ensure things are done right from the start.

You can think of it as building the foundation for quality. Thus, QA focuses on prevention—eliminating potential risks before they turn into problems for your business.

Quality Control (QC)

QC, on the other hand, is the reactive side of quality management. It kicks in once the product or service is created, focusing on detection—identifying and fixing any issues to ensure the final output meets quality requirements.

ISO Standards: An Essential Part of QA/QC

When it comes to quality assurance and control, ISO standards are gold. These internationally recognized guidelines provide the structure, terminology, and best practices for organizations to ensure consistent quality across their products, services, and processes.

They don’t just tell you what to do; they explain how to do it in a way that aligns with globally accepted practices.

What Are ISO Terms?

ISO terms are the official language of ISO standards. Think of terms like “non-conformance” or “risk-based thinking.” They’re not just fancy words—each term has a specific meaning, which is deeply embedded in the ISO standard.

For example, “non-conformance” refers to any deviation from specific requirements.

Why Does Understanding ISO Terms Matter in QA/QC?

In quality assurance and control, precision matters. A single misunderstood term can set off a chain reaction of errors—incorrect documentation, failed audits, or even quality issues that affect your customers.

This is why knowing and understanding ISO terms is absolutely essential. Let’s explore this in detail:

  1. They’re the Foundation for Compliance

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Auditors are laser-focused on ISO standards. They’re not looking for “close enough”: they want to see that your QA/QC processes are fully aligned with the requirements.

However, if your team confuses “corrective action” with “preventive action,” it’s more than a semantics issue. In fact, it can be a signal to auditors that your processes may not be robust enough to meet ISO standards.

  1. They Simplify Communication Across Teams

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QA/QC isn’t just one department’s job. It spans operations, manufacturing, engineering, and beyond. Thus, ISO terms create a universal language that ensures clarity across the board.

When everyone understands the exact meaning of terms like “risk-based thinking” or “context of the organization”, there’s no room for misinterpretation.

  1. They Build Credibility with Stakeholders

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From customers to regulators, stakeholders expect you to know your stuff when it comes to quality management. Mastering ISO terms isn’t just about compliance—it’s about showing that your organization takes quality seriously.

Breaking Down Complex ISO Terms

Now, let’s break down some of the key ISO terms you’ll come across if you’re in quality management and find out what they really mean in plain English.

  • Non-Conformance: A fancy way of saying something doesn’t meet the required standard. It could be a product, a process, or even documentation that fails to align with the ISO requirements.
  • Corrective Action: Focuses on fixing a problem after it’s occurred. 
  • Preventive Action: Refers to addressing risks before they turn into problems.
  • Risk-based Thinking: A mindset often reflected in ISO standards. It’s about looking ahead and planning for uncertainties, rather than scrambling to fix issues after they arise.
  • Documented Information: Covers any medium—digital or physical—used to document processes, policies, and evidence. It’s a broader term than “records” or “manuals.”
  • Context of the Organization: Refers to understanding the internal and external factors that affect your quality management system
  • Audit Evidence: Records, statements, or data that prove you’re meeting requirements
  • Continuous Improvement: This term emphasizes ongoing progress rather than one-time fixes. It’s about consistently finding ways to enhance your processes, products, and overall system.
  • Interested Parties: People or organizations impacted by your QMS. It could include customers, regulators, suppliers, or even your employees.

You can refer to this ISO full-form guide to learn more about such terms.

Tools and Resources to Learn ISO Terms for QA/QC

Understanding ISO terminology can feel overwhelming. Thankfully, there are plenty of tools, platforms, and resources designed to help you wrap your head around ISO terms.

Let’s explore them in detail:

  1. ISO.org

The official ISO website is your first stop for everything standards-related. They offer glossaries, FAQs, and detailed explanations of terms straight from the source.

  1. ASQ (American Society for Quality)

ASQ’s website is a goldmine for QA/QC professionals. The quality glossary is particularly helpful, offering straightforward definitions of ISO terms.

  1. Training Platforms

Many online platforms provide in-depth courses on ISO 9001 and QMS-specific content. 

  1. ISO Training and Certification Providers

Organizations like the British Standards Institution (BSI) offer workshops and training sessions that not only prepare you for ISO certifications but also make terminology less intimidating.

  1. Industry Forums and Communities

Sometimes, the best way to learn is by talking to others who’ve been there. So, join forums (like the ASQ community) where you can find QA/QC professionals willing to share their insights on ISO terms and how to apply them.

  1. Cheat Sheets and Infographics

Platforms like Canva or Pinterest have read-to-use cheat sheets and visual guides on ISO terminology. These are quick-reference tools you can print out or keep handy on your desktop.

  1. Internal Knowledge Sharing

Lastly, don’t underestimate the value of peer learning. Organize workshops, brown-bag sessions or internal wikis where team members can share their knowledge of ISO terms.

Conclusion

As you dig deeper into quality assurance and quality control, remember that understanding these terms is an ongoing process.

So, focus on the most critical terms for your organization and build your knowledge from there. You can use the tools and resources we’ve covered above to involve your team and make learning a shared priority.

The more you integrate this knowledge into the real world, the less overwhelming ISO standards become!

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