bearer vs traveler

bearer and traveler both are nouns.

Word	Noun	Adjective	Verb	Adverb
bearer	Yes	No	No	No
traveler	Yes	No	No	No

As nouns, traveler is a hypernym of bearer; that is, traveler is a word with a broader meaning than bearer:

Other hypernyms of bearer include traveller.

bearer (noun)	traveler (noun)
a messenger who bears or presents	a person who changes location
one of the mourners carrying the coffin at a funeral
the person who is in possession of a check or note or bond or document of title that is endorsed to him or to whoever holds it
someone whose employment involves carrying something