wise guy vs weisenheimer

wise guy and weisenheimer both are nouns.

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

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

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

Other synonyms of wise guy include smart aleck, wiseacre, wisenheimer.

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