strident vs cacophonous

strident and cacophonous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
strident	No	Yes	No	No
cacophonous	No	Yes	No	No

strident (adjective)	cacophonous (adjective)
unpleasantly loud and harsh	having an unpleasant sound
being sharply insistent on being heard
conspicuously and offensively loud; given to vehement outcry
of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then')