abroad, foreign
Another word for "oversea" is "overseas."
overseas
Overseas Intercontenental Global Worldwide
Another word for abroad is overseas. A person can work or live abroad while his home is in the US somewhere.
"He went overseas."
Overseas means another country to the one you are in.
He stayed overseas for a number of years after getting an overseas assignment.
ForeignMarineHowever, If I was writing a sentence that said "He traveled overseas", and wanted to write it differently, I might use "He traveled to a foreign land" or "He traveled across the ocean".
A country begins trading with Another Country overseas.
oversees
Abroad
being somewhere else