overseas vs transoceanic

overseas

• Across a sea; to or in an area across a sea. 

• Used with ethnicities, nationalities, or religious affiliations: living (being resident) in a foreign country. 

• Abroad. 

• Abroad. 

• Across a sea; to an area across a sea. 

transoceanic

• beyond or on the other side of an ocean 

• crossing an ocean