walk vs walker

walk and walker both are nouns.

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

walk (noun)	walker (noun)
the act of traveling by foot	an enclosing framework on casters or wheels; helps babies learn to walk
(baseball) an advance to first base by a batter who receives four balls	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 slow gait of a horse in which two feet are always on the ground	a shoe designed for comfortable walking
the act of walking somewhere	a person who travels by foot
careers in general
a path set aside for walking
manner of walking

walk (verb)	walker (verb)
obtain a base on balls
give a base on balls to
use one's feet to advance; advance by steps
accompany or escort
walk at a pace
traverse or cover by walking
take a walk; go for a walk; walk for pleasure
make walk
live or behave in a specified manner
be or act in association with