strident vs raucous

strident and raucous both are adjectives.

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

As adjectives, strident and raucous are synonyms defined as:

strident (adjective)	raucous (adjective)
unpleasantly loud and harsh	unpleasantly loud and harsh
being sharply insistent on being heard	disturbing the public peace; loud and rough
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')