waddler vs footer

waddler and footer both are nouns.

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

As nouns, footer is a hypernym of waddler; that is, footer is a word with a broader meaning than waddler:

Other hypernyms of waddler include pedestrian, walker.

waddler (noun)	footer (noun)
someone who walks with a waddling gait	a printed note placed below the text on a printed page
	a person who travels by foot
	(used only in combinations) the height or length of something in feet