unrestraint vs abandon

unrestraint and abandon both are nouns.

Word	Noun	Adjective	Verb	Adverb
unrestraint	Yes	No	No	No
abandon	Yes	No	Yes	No

As nouns, abandon is a hyponym of unrestraint; that is, abandon is a word with a more specific, narrower meaning than unrestraint:

unrestraint: the quality of lacking restraint
abandon: the trait of lacking restraint or control; reckless freedom from inhibition or worry

Other hyponyms of unrestraint include intemperance, unconstraint, wantonness, looseness, sottishness.

unrestraint (noun)	abandon (noun)
the quality of lacking restraint	the trait of lacking restraint or control; reckless freedom from inhibition or worry
	a feeling of extreme emotional intensity

unrestraint (verb)	abandon (verb)
	leave someone who needs or counts on you; leave in the lurch
	stop maintaining or insisting on; of ideas or claims
	leave behind empty; move out of
	forsake, leave behind
	give up with the intent of never claiming again