historicalness vs significance

historicalness and significance both are nouns.

Word	Noun	Adjective	Verb	Adverb
historicalness	Yes	No	No	No
significance	Yes	No	No	No

As nouns, significance is a hypernym of historicalness; that is, significance is a word with a broader meaning than historicalness:

historicalness (noun)	significance (noun)
significance owing to its history	the quality of being significant
the state of having in fact existed in the past	a meaning that is not expressly stated but can be inferred
	the message that is intended or expressed or signified