pleasure vs pleasance

pleasure and pleasance both are nouns.

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

As nouns, pleasure and pleasance are synonyms defined as:

pleasure and pleasance: a fundamental feeling that is hard to define but that people desire to experience

pleasure (noun)	pleasance (noun)
sexual gratification	a fundamental feeling that is hard to define but that people desire to experience
an activity that affords enjoyment	a pleasant and secluded part of a garden; usually attached to a mansion
something or someone that provides a source of happiness
a formal expression
a fundamental feeling that is hard to define but that people desire to experience