picture frame vs border

picture frame and border both are nouns.

Word	Noun	Adjective	Verb	Adverb
picture frame	Yes	No	No	No
border	Yes	No	Yes	No

picture frame (noun)	border (noun)
a framework in which a picture is mounted	a strip forming the outer edge of something
	a decorative recessed or relieved surface on an edge
	a line that indicates a boundary
	the boundary of a surface
	the boundary line or the area immediately inside the boundary

picture frame (verb)	border (verb)
	lie adjacent to another or share a boundary
	extend on all sides of simultaneously; encircle
	enclose in or as if in a frame
	provide with a border or edge
	form the boundary of; be contiguous to