roominess vs commodiousness

roominess and commodiousness both are nouns.

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

As nouns, roominess and commodiousness are synonyms defined as:

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

Other synonyms of roominess include capaciousness, spaciousness.

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