Moderation Queue - How to add words?

Under Moderation Queue there is a text said:
To prevent abuse, some tools automatically hide content and list it here until it is manually approved by a moderator.
I assume there is a word list database contains the words like "f**k" and that kind of word. And this tool will suspend the topic which contains those kind of words from post. i'm i right? if it works that way, I need to add my local word under that database. Please let me know how can i add my local on that database or snippet?
Thanks,
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Comments
@achu
You would have to find and install such a plugin.
It's not built in to Vanilla.