boundless vs unbounded

boundless and unbounded both are adjectives.

Word	Noun	Adjective	Verb	Adverb
boundless	No	Yes	No	No
unbounded	No	Yes	No	No

As adjectives, boundless and unbounded are synonyms defined as:

boundless and unbounded: seemingly boundless in amount, number, degree, or especially extent

Other synonyms of boundless include limitless.

boundless (adjective)	unbounded (adjective)
seemingly boundless in amount, number, degree, or especially extent	seemingly boundless in amount, number, degree, or especially extent