grave mound vs hill

grave mound and hill both are nouns.

Word	Noun	Adjective	Verb	Adverb
grave mound	Yes	No	No	No
hill	Yes	No	Yes	No

As nouns, hill is a hypernym of grave mound; that is, hill is a word with a broader meaning than grave mound:

grave mound: (archeology) a heap of earth placed over prehistoric tombs
hill: structure consisting of an artificial heap or bank usually of earth or stones

Other hypernyms of grave mound include mound.

grave mound (noun)	hill (noun)
(archeology) a heap of earth placed over prehistoric tombs	(baseball) the slight elevation on which the pitcher stands
	structure consisting of an artificial heap or bank usually of earth or stones
	a local and well-defined elevation of the land

grave mound (verb)	hill (verb)
	form into a hill