walker vs footer

walker and footer both are nouns.

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

As nouns, walker and footer are synonyms defined as:

Other synonyms of walker include pedestrian.

walker (noun)	footer (noun)
an enclosing framework on casters or wheels; helps babies learn to walk	a printed note placed below the text on a printed page
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 person who travels by foot
a shoe designed for comfortable walking	(used only in combinations) the height or length of something in feet
a person who travels by foot