walker vs pedestrian

walker and pedestrian both are nouns.

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

As nouns, walker and pedestrian are synonyms defined as:

Other synonyms of walker include footer.

walker (noun)	pedestrian (noun)
an enclosing framework on casters or wheels; helps babies learn to walk	a person who travels by foot
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

walker (adjective)	pedestrian (adjective)
	lacking wit or imagination