Navy Cross vs decoration

Navy Cross and decoration both are nouns.

Word	Noun	Adjective	Verb	Adverb
Navy Cross	Yes	No	No	No
decoration	Yes	No	No	No

As nouns, decoration is a hypernym of Navy Cross; that is, decoration is a word with a broader meaning than Navy Cross:

Navy Cross: a United States Navy decoration for extraordinary heroism against an armed enemy
decoration: an award for winning a championship or commemorating some other event

Other hypernyms of Navy Cross include laurel wreath, medal, medallion, palm, ribbon.

Navy Cross (noun)	decoration (noun)
a United States Navy decoration for extraordinary heroism against an armed enemy	the act of decorating something (in the hope of making it more attractive)
	something used to beautify
	an award for winning a championship or commemorating some other event