unstinting vs unsparing

unstinting and unsparing both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unstinting	No	Yes	No	No
unsparing	No	Yes	No	No

As adjectives, unstinting and unsparing are synonyms defined as:

Other synonyms of unstinting include lavish, munificent, overgenerous, too-generous, unstinted.

unstinting (adjective)	unsparing (adjective)
very generous	very generous
	not forbearing; ruthless