electrolysis vs epilation

electrolysis and epilation both are nouns.

Word	Noun	Adjective	Verb	Adverb
electrolysis	Yes	No	No	No
epilation	Yes	No	No	No

As nouns, epilation is a hypernym of electrolysis; that is, epilation is a word with a broader meaning than electrolysis:

electrolysis: removing superfluous or unwanted hair by passing an electric current through the hair root
epilation: the act of removing hair (as from an animal skin)

Other hypernyms of electrolysis include depilation.

electrolysis (noun)	epilation (noun)
removing superfluous or unwanted hair by passing an electric current through the hair root	the act of removing hair (as from an animal skin)
(chemistry) a chemical decomposition reaction produced by passing an electric current through a solution containing ions	loss of hair; the result of removing hair