overseas vs abroad

overseas and abroad both are adjectives.

Word	Noun	Adjective	Verb	Adverb
overseas	No	Yes	No	Yes
abroad	No	Yes	No	Yes

As adjectives, overseas and abroad are synonyms defined as:

As adverbs, overseas and abroad are synonyms defined as:

overseas (adjective)	abroad (adjective)
in a foreign country	in a foreign country
being or passing over or across the sea

overseas (adverb)	abroad (adverb)
beyond or across the sea	to or in a foreign country
in a place across an ocean	in a place across an ocean
	far away from home or one's usual surroundings