soothe vs relieve

soothe and relieve both are verbs.

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

As verbs, relieve is a hypernym of soothe; that is, relieve is a word with a broader meaning than soothe:

Other hypernyms of soothe include alleviate, assuage, palliate.

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

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

soothe (verb)	relieve (verb)
cause to feel better	provide physical relief, as from pain
give moral or emotional strength to	provide relief for
	alleviate or remove (pressure or stress) or make less oppressive
	relieve oneself of troubling information
	grant exemption or release to
	lessen the intensity of or calm
	take by stealing
	free from a burden, evil, or distress
	save from ruin, destruction, or harm
	free someone temporarily from his or her obligations
	grant relief or an exemption from a rule or requirement to