home ground vs surround

home ground and surround both are nouns.

Word	Noun	Adjective	Verb	Adverb
home ground	Yes	No	No	No
surround	Yes	No	Yes	No

As nouns, surround is a hypernym of home ground; that is, surround is a word with a broader meaning than home ground:

home ground: the type of environment in which an organism or group normally lives or occurs
surround: the area in which something exists or lives

Other hypernyms of home ground include environment, environs, surroundings.

home ground (noun)	surround (noun)
the type of environment in which an organism or group normally lives or occurs	the area in which something exists or lives

home ground (verb)	surround (verb)
	surround so as to force to give up
	surround with a wall in order to fortify
	extend on all sides of simultaneously; encircle
	envelop completely