descender vs mover

descender and mover both are nouns.

Word	Noun	Adjective	Verb	Adverb
descender	Yes	No	No	No
mover	Yes	No	No	No

As nouns, mover is a hypernym of descender; that is, mover is a word with a broader meaning than descender:

descender (noun)	mover (noun)
(printing) the part of lowercase letters that extends below the other lowercase letters	a company that moves the possessions of a family or business from one site to another
a lowercase letter that has a part extending below other lowercase letters	someone who moves
someone who descends	(parliamentary procedure) someone who makes a formal motion
	workman employed by a moving company