everydayness vs mundaneness

everydayness and mundaneness both are nouns.

Word	Noun	Adjective	Verb	Adverb
everydayness	Yes	No	No	No
mundaneness	Yes	No	No	No

As nouns, mundaneness is a hypernym of everydayness; that is, mundaneness is a word with a broader meaning than everydayness:

everydayness: ordinariness as a consequence of being frequent and commonplace
mundaneness: the quality of being commonplace and ordinary

Other hypernyms of everydayness include mundanity, ordinariness.

everydayness (noun)	mundaneness (noun)
ordinariness as a consequence of being frequent and commonplace	the quality or character of being intellectually sophisticated and worldly through cultivation or experience or disillusionment
	the quality of being commonplace and ordinary