boundlessness vs unboundedness

boundlessness and unboundedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
boundlessness	Yes	No	No	No
unboundedness	Yes	No	No	No

As nouns, boundlessness and unboundedness are synonyms defined as:

boundlessness and unboundedness: the quality of being infinite; without bound or limit

Other synonyms of boundlessness include infiniteness, infinitude, limitlessness.

boundlessness (noun)	unboundedness (noun)
the quality of being infinite; without bound or limit	the quality of being infinite; without bound or limit