color guard vs escort

color guard and escort both are nouns.

Word	Noun	Adjective	Verb	Adverb
color guard	Yes	No	No	No
escort	Yes	No	Yes	No

As nouns, escort is a hypernym of color guard; that is, escort is a word with a broader meaning than color guard:

color guard (noun)	escort (noun)
a ceremonial escort for the (regimental) colors	the act of accompanying someone or something in order to protect them
	a participant in a date
	someone who escorts and protects a prominent person
	an attendant who is employed to accompany someone

color guard (verb)	escort (verb)
	accompany as an escort
	conduct someone someplace