adjoin

sense 1: lie adjacent to another or share a boundary; "Canada adjoins the U.S."; "England marches with Scotland"
border adjoin edge abut march butt butt_against butt_on

sense 2: be in direct physical contact with; make contact; "The two buildings touch"; "Their hands touched"; "The wire must not contact the metal cover"; "The surfaces contact at this point"
touch adjoin meet contact