changeful vs open-ended

changeful and open-ended both are adjectives.

Word	Noun	Adjective	Verb	Adverb
changeful	No	Yes	No	No
open-ended	No	Yes	No	No

changeful (adjective)	open-ended (adjective)
such that alteration is possible; having a marked tendency to change	allowing for future changes or revisions
	allowing for a spontaneous response
	without fixed limits or restrictions