The corresponding noun for the adjective gentle is gentleness. A related noun form is gentility.
The corresponding noun of "sarcastic" is "sarcasm."
The verb avert does not have a corresponding noun, it does, however, have a corresponding adjective: avertable.
Problematic and problematical are the corresponding adjectives to the noun problem. The corresponding adverb is problematically.
Argument, arguerer, and the gerund, arguing are the corresponding noun forms for the verb to argue.
The corresponding noun to "choose" is "choice."
"Triumphant" is not a noun. The corresponding noun is "triumph"
Tireless is an adjective. The corresponding noun is tirelessness.
No, lonesome is an adjective. The corresponding noun is lonesomeness.
No, embroider is a verb. The corresponding noun is embroidery.
Affirmation is the corresponding noun to the verb affirm.
No, "behave" is a verb, not a noun. It is used to describe one's actions or conduct in a particular manner.