unbounded vs boundless

unbounded and boundless both are adjectives.

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

As adjectives, unbounded and boundless are synonyms defined as:

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

Other synonyms of unbounded include limitless.

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