shrill vs strident

shrill and strident both are adjectives.

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

As adjectives, shrill and strident are synonyms defined as:

shrill (adjective)	strident (adjective)
of colors that are bright and gaudy	unpleasantly loud and harsh
having or emitting a high-pitched and sharp tone or tones	being sharply insistent on being heard
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')

shrill (verb)	strident (verb)
utter a shrill cry