WordNet sense 1 (being or passing over or across the sea):

oversea

WordNet sense 2 (relating to or characteristic of or occurring on the sea or ships):

sea

WordNet sense 3 (in a foreign country):

abroad

WordNet sense 4 (of concern to or concerning the affairs of other nations (other than your own)):

foreign

WordNet sense 5 (in a place across an ocean):

beyond the sea, over the sea