abseiler vs descender

abseiler and descender both are nouns.

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

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

abseiler: a person who descends down a nearly vertical face by using a doubled rope that is wrapped around the body and attached to some high point
descender: someone who descends

abseiler (noun)	descender (noun)
a person who descends down a nearly vertical face by using a doubled rope that is wrapped around the body and attached to some high point	(printing) the part of lowercase letters that extends below the other lowercase letters
	a lowercase letter that has a part extending below other lowercase letters
	someone who descends