solidarity vs commonality

solidarity and commonality both are nouns.

Word	Noun	Adjective	Verb	Adverb
solidarity	Yes	No	No	No
commonality	Yes	No	No	No

As nouns, commonality is a hypernym of solidarity; that is, commonality is a word with a broader meaning than solidarity:

solidarity: a union of interests or purposes or sympathies among members of a group
commonality: sharing of common attributes

Other hypernyms of solidarity include commonness.

solidarity (noun)	commonality (noun)
a union of interests or purposes or sympathies among members of a group	sharing of common attributes
	a class composed of persons lacking clerical or noble rank