Question

make noun from the verb complain / behave​

Answer 1

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here is your awesome answer

Complaint is the noun form of the verb complain. In legal terms, a complaint is the document that officially initiates a legal proceeding.

The abstract noun of the verb 'behave' is 'behavior' in American spelling or 'behaviour' in British English spelling.

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Answer 2

Answer:

complain=complaint

behave=behaviour