wiseacre vs smart aleck

wiseacre and smart aleck both are nouns.

Word	Noun	Adjective	Verb	Adverb
wiseacre	Yes	No	No	No
smart aleck	Yes	No	No	No

As nouns, wiseacre and smart aleck are synonyms defined as:

wiseacre and smart aleck: an upstart who makes conceited, sardonic, insolent comments

Other synonyms of wiseacre include weisenheimer, wise guy, wisenheimer.

wiseacre (noun)	smart aleck (noun)
an upstart who makes conceited, sardonic, insolent comments	an upstart who makes conceited, sardonic, insolent comments