The word behavior is a noun. It is the way in which one behaves.
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adverb
"Controvert" is a verb; "extrovert" is usually a noun, although it could sensibly be a verb describing the behavior of some microorganisms.
i want to know what part of speech is camping
what part of speech is beneath
The part(s) of speech that has an "A" sound are: Adjective and Adverb.