inconstant vs fickle

inconstant and fickle both are adjectives.

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

inconstant (adjective)	fickle (adjective)
likely to change frequently often without apparent or cogent reason; variable	liable to sudden unpredictable change
	marked by erratic changeableness in affections or attachments