relevancy vs connectedness

relevancy and connectedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
relevancy	Yes	No	No	No
connectedness	Yes	No	No	No

As nouns, connectedness is a hypernym of relevancy; that is, connectedness is a word with a broader meaning than relevancy:

relevancy: the relation of something to the matter at hand
connectedness: a relation between things or events (as in the case of one causing the other or sharing features with it)

Other hypernyms of relevancy include connection, connexion.

relevancy (noun)	connectedness (noun)
the relation of something to the matter at hand	a relation between things or events (as in the case of one causing the other or sharing features with it)
	the state of being connected