travel vs crawling

travel and crawling both are nouns.

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

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

travel (noun)	crawling (noun)
the act of going from one place to another	a slow mode of locomotion on hands and knees or dragging the body
self-propelled movement
a movement through space that changes the location of something

travel (verb)	crawling (verb)
change location; move, travel, or proceed, also metaphorically
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