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Plugin
Definition
Add-on software that extends the functionality of an existing application.
In Plain English
A plugin is like an attachment for a power tool—it adds capabilities without replacing the core tool.
Real-World Example
WordPress plugins add features like contact forms, SEO tools, and e-commerce without custom development.
Why It Matters for Your Work
Plugins let you add functionality quickly and cheaply, but too many can slow down your site or create conflicts.
Common Mistake
Installing dozens of plugins. Each one adds potential security vulnerabilities and performance issues.