sexual pleasure vs pleasance

sexual pleasure and pleasance both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual pleasure	Yes	No	No	No
pleasance	Yes	No	No	No

As nouns, pleasance is a hypernym of sexual pleasure; that is, pleasance is a word with a broader meaning than sexual pleasure:

sexual pleasure: pleasure derived from sexual activities
pleasance: a fundamental feeling that is hard to define but that people desire to experience

Other hypernyms of sexual pleasure include pleasure.

sexual pleasure (noun)	pleasance (noun)
pleasure derived from sexual activities	a fundamental feeling that is hard to define but that people desire to experience
	a pleasant and secluded part of a garden; usually attached to a mansion