x1 reflects/pertains to the Atlantic Ocean region/culture/history/geography/identity/[nationality] in aspect x2.
Pertains to peoples or things bordering, embedded in (or on an island in), submerged in, located under or on the bottom of, or going through/over the Atlantic Ocean as well. "Trans-Atlantic" is closely related to this word. See also: "gomsi", "pakfiko", ".indi'o".