It is not possible to know why that word is confusing without providing that word. However, the word may be confusing to you because it is the first time you've seen or heard it.
The word for giving a confusing explanation is "equivocation."
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Your question is confusing and I think it is partly because of your word choice but mostly because you do not understand how to speak English yet.
Kindhearted is a nice word. Knowledgeable is a nice word.
Fack is not a nice word; it is slang for a bad word.
Mississippi
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Calm.