edge vs edge in

edge is a noun but edge in is not a noun.

Word	Noun	Adjective	Verb	Adverb
edge	Yes	No	Yes	No
edge in	No	No	Yes	No

edge (noun)	edge in (noun)
a sharp side formed by the intersection of two surfaces of an object
the outside limit of an object or area or surface; a place farthest away from the center of something
a slight competitive advantage
the attribute of urgency in tone of voice
the boundary of a surface
a line determining the limits of an area

edge (verb)	edge in (verb)
lie adjacent to another or share a boundary	push one's way into (a space)
provide with an edge
advance slowly, as if by inches
provide with a border or edge