stalker vs walker

stalker and walker both are nouns.

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

As nouns, walker is a hypernym of stalker; that is, walker is a word with a broader meaning than stalker:

Other hypernyms of stalker include footer, pedestrian.

stalker (noun)	walker (noun)
someone who stalks game	an enclosing framework on casters or wheels; helps babies learn to walk
someone who walks with long stiff strides	a light enclosing framework (trade name Zimmer) with rubber castors or wheels and handles; helps invalids or the handicapped or the aged to walk
someone who prowls or sneaks about; usually with unlawful intentions	a shoe designed for comfortable walking
	a person who travels by foot