unearth vs turn up

unearth and turn up both are verbs.

Word	Noun	Adjective	Verb	Adverb
unearth	No	No	Yes	No
turn up	No	No	Yes	No

As verbs, turn up is a hypernym of unearth; that is, turn up is a word with a broader meaning than unearth:

unearth: discover by investigation
turn up: discover the location of; determine the place of; find by searching or examining

Other hypernyms of unearth include locate.

unearth (verb)	turn up (verb)
recover through digging	appear or become visible; make a showing
discover by investigation	bend or lay so that one part covers the other
	find by digging in the ground
	discover the location of; determine the place of; find by searching or examining
	be shown or be found to be