neighbor vs butt against

neighbor is a noun but butt against is not a noun.

Word	Noun	Adjective	Verb	Adverb
neighbor	Yes	No	Yes	No
butt against	No	No	Yes	No

As verbs, butt against is a hypernym of neighbor; that is, butt against is a word with a broader meaning than neighbor:

Other hypernyms of neighbor include abut, adjoin, border, butt, butt on, edge, march.

neighbor (noun)	butt against (noun)
a nearby object of the same kind
a person who lives (or is located) near another

neighbor (verb)	butt against (verb)
be located near or adjacent to	lie adjacent to another or share a boundary
live or be located as a neighbor	collide violently with an obstacle