improve vs recover

improve and recover both are verbs.

Word	Noun	Adjective	Verb	Adverb
improve	No	No	Yes	No
recover	No	No	Yes	No

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

improve (verb)	recover (verb)
get better	get over an illness or shock
to make better	regain a former condition after a financial loss
	get or find back; recover the use of
	regain or make up for
	reuse (materials from waste products)
	cover anew