What body of water borders the US on the east coast?
Gulf of Mexico - a large body of water that borders Mexico to the east. Guatemala - a country that borders Mexico on the south; it borders the Pacific Ocean and the Gulf of Mexico. Pacific Ocean - a large body of water that borders Mexico to the west. Yucatan Peninsula - a peninsula off the southeast coast of Mexico (in the Gulf of Mexico).
What is the name of the body of water that is the part of the Indian Ocean between the east coast of India and the Malaya Peninsula?
There is not a body of water that entirely separates England and Scotland along their borders. The west coast is separated by the Solway Firth, but only for a short distance. The majority of the border is on land. This might possibly be a reference to the river Tweed which ends on the east coast at Berwick on Tweed ... for much of its length it forms the border between England and Scotland.