blazer vs sports jacket

blazer and sports jacket both are nouns.

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

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

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

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

blazer (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