sports coat vs blazer

sports coat and blazer both are nouns.

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

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

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

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

sports coat (noun)	blazer (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