vicissitude vs mutableness

vicissitude and mutableness both are nouns.

Word	Noun	Adjective	Verb	Adverb
vicissitude	Yes	No	No	No
mutableness	Yes	No	No	No

As nouns, mutableness is a hypernym of vicissitude; that is, mutableness is a word with a broader meaning than vicissitude:

vicissitude: mutability in life or nature (especially successive alternation from one condition to another)
mutableness: the quality of being capable of mutation

Other hypernyms of vicissitude include mutability.

vicissitude (noun)	mutableness (noun)
mutability in life or nature (especially successive alternation from one condition to another)	the quality of being capable of mutation
a variation in circumstances or fortune at different times in your life or in the development of something