sports coat vs sports jacket

sports coat and sports jacket both are nouns.

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

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

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

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

sports coat (noun)	sports jacket (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