relaxedness vs informality

relaxedness and informality both are nouns.

Word	Noun	Adjective	Verb	Adverb
relaxedness	Yes	No	No	No
informality	Yes	No	No	No

As nouns, informality is a hypernym of relaxedness; that is, informality is a word with a broader meaning than relaxedness:

relaxedness: The quality of being eased or loosened, or of having an easy-going mood or temperament.
informality: freedom from constraint or embarrassment

Other hypernyms of relaxedness include ease.

relaxedness (noun)	informality (noun)
The quality of being eased or loosened, or of having an easy-going mood or temperament.	a manner that does not take forms and ceremonies seriously
	freedom from constraint or embarrassment