inconstant vs changeful

inconstant and changeful both are adjectives.

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

inconstant (adjective)	changeful (adjective)
likely to change frequently often without apparent or cogent reason; variable	such that alteration is possible; having a marked tendency to change