still vs quiet

still and quiet both are nouns.

Word	Noun	Adjective	Verb	Adverb
still	Yes	Yes	Yes	Yes
quiet	Yes	Yes	Yes	Yes

As adjectives, still and quiet are synonyms defined as:

still and quiet: (of a body of water) free from disturbance by heavy waves

Other synonyms of still include placid, smooth, tranquil, unruffled.

As nouns, quiet is a hypernym of still; that is, quiet is a word with a broader meaning than still:

Other hypernyms of still include silence.

As verbs, still and quiet are synonyms defined as:

Other synonyms of still include calm, calm down, lull, quieten, tranquilize, tranquillise, tranquillize.

still (noun)	quiet (noun)
an apparatus used for the distillation of liquids; consists of a vessel in which a substance is vaporized by heat and a condenser where the vapor is condensed	a disposition free from stress or emotion
a static photograph (especially one taken from a movie and used for advertising purposes)	the absence of sound
a plant and works where alcoholic drinks are made by distillation	a period of calm weather
(poetic) tranquil silence	an untroubled state; free from disturbances

still (adjective)	quiet (adjective)
not sparkling	free of noise or uproar; or making little if any sound
used of pictures; of a single or static photograph not presented so as to create the illusion of motion; or representing objects not capable of motion	characterized by an absence or near absence of agitation or activity
(of a body of water) free from disturbance by heavy waves	(of the sun) characterized by a low level of surface phenomena, such as sunspots
marked by absence of sound	(of a body of water) free from disturbance by heavy waves
not in physical motion	in a softened tone
free from noticeable current	not showy or obtrusive

still (verb)	quiet (verb)
cause to be quiet or not talk	make calm or still
make motionless	become quiet or quieter
make calm or still
lessen the intensity of or calm

still (adverb)	quiet (adverb)
to a greater degree or extent; used with comparisons	with little or no activity or no agitation (`quiet' is a nonstandard variant for `quietly')
with reference to action or condition; without change, interruption, or cessation
without moving or making a sound
despite anything to the contrary (usually preceding a concession)