Bronze Star vs medal

Bronze Star and medal both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bronze Star	Yes	No	No	No
medal	Yes	No	No	No

As nouns, medal is a hypernym of Bronze Star; that is, medal is a word with a broader meaning than Bronze Star:

Bronze Star: a United States military decoration awarded for meritorious service (except in aerial flight)
medal: an award for winning a championship or commemorating some other event

Other hypernyms of Bronze Star include decoration, laurel wreath, medallion, palm, ribbon.

Bronze Star (noun)	medal (noun)
a United States military decoration awarded for meritorious service (except in aerial flight)	an award for winning a championship or commemorating some other event