Nouns

(n)boundary line, border, borderline, delimitation, metea line that indicates a boundary
(n)margin, border, perimeterthe boundary line or the area immediately inside the boundary
(n)edge, borderthe boundary of a surface
(n)molding, moulding, bordera decorative recessed or relieved surface on an edge
(n)bordera strip forming the outer edge of something“the rug had a wide blue border”

Verbs

(v)surround, environ, ring, skirt, borderextend on all sides of simultaneously; encircle“The forest surrounds my property”
(v)bound, borderform the boundary of; be contiguous to
(v)frame, frame in, borderenclose in or as if in a frame“frame a picture”
(v)border, edgeprovide with a border or edge“edge the tablecloth with embroidery”
(v)border, adjoin, edge, abut, march, butt, butt against, butt onlie adjacent to another or share a boundary“Canada adjoins the U.S.”, “England marches with Scotland”