travel vs voyage

travel and voyage both are nouns.

Word	Noun	Adjective	Verb	Adverb
travel	Yes	No	Yes	No
voyage	Yes	No	Yes	No

As verbs, voyage is a hyponym of travel; that is, voyage is a word with a more specific, narrower meaning than travel:

Other hyponyms of travel include tour, globe-trot, sledge, navigate, sail, trek, trek.

travel (noun)	voyage (noun)
the act of going from one place to another	a journey to some distant place
self-propelled movement	an act of traveling by water
a movement through space that changes the location of something

travel (verb)	voyage (verb)
change location; move, travel, or proceed, also metaphorically	travel on water propelled by wind or by other means
make a trip for pleasure
travel upon or across
undergo transportation as in a vehicle
undertake a journey or trip
travel from place to place, as for the purpose of finding work, preaching, or acting as a judge