walker vs stomper

walker and stomper both are nouns.

Word	Noun	Adjective	Verb	Adverb
walker	Yes	No	No	No
stomper	Yes	No	No	No

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

walker: a person who travels by foot
stomper: someone who walks with a heavy noisy gait or who stamps on the ground

walker (noun)	stomper (noun)
an enclosing framework on casters or wheels; helps babies learn to walk	someone who walks with a heavy noisy gait or who stamps on the ground
a light enclosing framework (trade name Zimmer) with rubber castors or wheels and handles; helps invalids or the handicapped or the aged to walk
a shoe designed for comfortable walking
a person who travels by foot