sports jacket vs sports coat

sports jacket and sports coat both are nouns.

Word	Noun	Adjective	Verb	Adverb
sports jacket	Yes	No	No	No
sports coat	Yes	No	No	No

As nouns, sports jacket and sports coat are synonyms defined as:

sports jacket and sports coat: lightweight single-breasted jacket; often striped in the colors of a club or school

Other synonyms of sports jacket include blazer, sport coat, sport jacket.

sports jacket (noun)	sports coat (noun)
lightweight single-breasted jacket; often striped in the colors of a club or school	lightweight single-breasted jacket; often striped in the colors of a club or school