What will happen if you register a custom taxonomy with the same name as an existing built-in taxonomy like category?

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Wordpress - Custom Post Types and Taxonomies

What will happen if you register a custom taxonomy with the same name as an existing built-in taxonomy like category?

AIt will cause a fatal error and stop the site

BIt may cause unexpected behavior or conflicts

CThe custom taxonomy will be ignored silently

DWordPress will override the built-in taxonomy

Step-by-Step Solution

Solution:

Step 1: Understand taxonomy naming conflicts
Registering a taxonomy with a name already used by WordPress core can cause conflicts.
Step 2: Identify the result of conflict
WordPress does not throw fatal errors but behavior becomes unpredictable, causing issues in queries and admin UI.
Final Answer:
It may cause unexpected behavior or conflicts -> Option B
Quick Check:
Duplicate taxonomy name = conflicts, no fatal error [OK]

Quick Trick: Avoid using built-in taxonomy names for custom taxonomies [OK]

Common Mistakes:

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