jackass vs bozo

jackass and bozo both are nouns.

Word	Noun	Adjective	Verb	Adverb
jackass	Yes	No	No	No
bozo	Yes	No	No	No

As nouns, jackass and bozo are synonyms defined as:

Other synonyms of jackass include cuckoo, fathead, goof, goofball, goose, twat, zany.

jackass (noun)	bozo (noun)
male donkey	an informal term for a youth or man
a man who is a stupid incompetent fool	a man who is a stupid incompetent fool