wise vs impudent

wise is a noun but impudent is not a noun.

Word	Noun	Adjective	Verb	Adverb
wise	Yes	Yes	No	No
impudent	No	Yes	No	No

As adjectives, wise and impudent are synonyms defined as:

Other synonyms of wise include fresh, impertinent, overbold, sassy, saucy, smart.

wise (noun)	impudent (noun)
a way of doing or being

wise (adjective)	impudent (adjective)
having or prompted by wisdom or discernment	marked by casual disrespect
improperly forward or bold	improperly forward or bold
evidencing the possession of inside information
marked by the exercise of good judgment or common sense in practical matters