mutable vs inconstant

mutable and inconstant both are adjectives.

Word	Noun	Adjective	Verb	Adverb
mutable	No	Yes	No	No
inconstant	No	Yes	No	No

mutable (adjective)	inconstant (adjective)
capable of or tending to change in form or quality or nature	likely to change frequently often without apparent or cogent reason; variable
tending to undergo genetic mutation
prone to frequent change; inconstant