improve vs get over

improve and get over both are verbs.

Word	Noun	Adjective	Verb	Adverb
improve	No	No	Yes	No
get over	No	No	Yes	No

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

improve (verb)	get over (verb)
get better	improve in health
to make better	get on top of; deal with successfully
	to bring (a necessary but unpleasant task) to an end
	travel across or pass over