unscrupulous vs unprincipled

unscrupulous and unprincipled both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unscrupulous	No	Yes	No	No
unprincipled	No	Yes	No	No

unscrupulous (adjective)	unprincipled (adjective)
without scruples or principles	lacking principles or moral scruples
	having little or no integrity