butt against vs abut

butt against and abut both are verbs.

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

As verbs, butt against and abut are synonyms defined as:

Other synonyms of butt against include adjoin, border, butt, butt on, edge, march.

butt against (verb)	abut (verb)
lie adjacent to another or share a boundary	lie adjacent to another or share a boundary
collide violently with an obstacle