wisenheimer vs wise guy

wisenheimer and wise guy both are nouns.

Word	Noun	Adjective	Verb	Adverb
wisenheimer	Yes	No	No	No
wise guy	Yes	No	No	No

As nouns, wisenheimer and wise guy are synonyms defined as:

wisenheimer and wise guy: an upstart who makes conceited, sardonic, insolent comments

Other synonyms of wisenheimer include smart aleck, weisenheimer, wiseacre.

wisenheimer (noun)	wise guy (noun)
an upstart who makes conceited, sardonic, insolent comments	an upstart who makes conceited, sardonic, insolent comments