commodiousness vs roominess

commodiousness and roominess both are nouns.

Word	Noun	Adjective	Verb	Adverb
commodiousness	Yes	No	No	No
roominess	Yes	No	No	No

As nouns, commodiousness and roominess are synonyms defined as:

commodiousness and roominess: spatial largeness and extensiveness (especially inside a building)

Other synonyms of commodiousness include capaciousness, spaciousness.

commodiousness (noun)	roominess (noun)
spatial largeness and extensiveness (especially inside a building)	spatial largeness and extensiveness (especially inside a building)
	intellectual breadth