Medal of Honor vs ribbon

Medal of Honor and ribbon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Medal of Honor	Yes	No	No	No
ribbon	Yes	No	No	No

As nouns, ribbon is a hypernym of Medal of Honor; that is, ribbon is a word with a broader meaning than Medal of Honor:

Medal of Honor: the highest U.S. military decoration awarded for bravery and valor in action `above and beyond the call of duty'
ribbon: an award for winning a championship or commemorating some other event

Other hypernyms of Medal of Honor include decoration, laurel wreath, medal, medallion, palm.

Medal of Honor (noun)	ribbon (noun)
the highest U.S. military decoration awarded for bravery and valor in action `above and beyond the call of duty'	notion consisting of a narrow strip of fine material used for trimming
	a long strip of inked material for making characters on paper with a typewriter
	an award for winning a championship or commemorating some other event
	any long object resembling a thin line