Nouns

(n)environment, environs, surroundings, surroundthe area in which something exists or lives“the country — the flat agricultural surround”

Verbs

(v)surround, environ, ring, skirt, borderextend on all sides of simultaneously; encircle“The forest surrounds my property”
(v)smother, surroundenvelop completely“smother the meat in gravy”
(v)besiege, beleaguer, surround, hem in, circumventsurround so as to force to give up“The Turks besieged Vienna”
(v)wall, palisade, fence, fence in, surroundsurround with a wall in order to fortify