escort vs usher

escort and usher both are nouns.

Word	Noun	Adjective	Verb	Adverb
escort	Yes	No	Yes	No
usher	Yes	No	Yes	No

As nouns, usher is a hyponym of escort; that is, usher is a word with a more specific, narrower meaning than escort:

Other hyponyms of escort include color guard, guard of honor, honor guard, minder, guide.

escort (noun)	usher (noun)
the act of accompanying someone or something in order to protect them	someone employed to conduct others
a participant in a date	an official stationed at the entrance of a courtroom or legislative chamber
someone who escorts and protects a prominent person
an attendant who is employed to accompany someone

escort (verb)	usher (verb)
accompany as an escort	take (someone) to their seats, as in theaters or auditoriums
conduct someone someplace