soothe vs still

soothe is not a noun while still is a noun.

Word	Noun	Adjective	Verb	Adverb
soothe	No	No	Yes	No
still	Yes	Yes	Yes	Yes

As verbs, still is a hyponym of soothe; that is, still is a word with a more specific, narrower meaning than soothe:

Other hyponyms of soothe include calm, calm down, lull, quiet, quieten, tranquilize, tranquillise, tranquillize, allay, ease, relieve.

soothe (noun)	still (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 static photograph (especially one taken from a movie and used for advertising purposes)
	a plant and works where alcoholic drinks are made by distillation
	(poetic) tranquil silence

soothe (adjective)	still (adjective)
	not sparkling
	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
	(of a body of water) free from disturbance by heavy waves
	marked by absence of sound
	not in physical motion
	free from noticeable current

soothe (verb)	still (verb)
cause to feel better	cause to be quiet or not talk
give moral or emotional strength to	make motionless
	make calm or still
	lessen the intensity of or calm

soothe (adverb)	still (adverb)
	to a greater degree or extent; used with comparisons
	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)