trade gap vs visible balance

trade gap and visible balance both are nouns.

Word	Noun	Adjective	Verb	Adverb
trade gap	Yes	No	No	No
visible balance	Yes	No	No	No

As nouns, trade gap and visible balance are synonyms defined as:

trade gap and visible balance: the difference in value over a period of time of a country's imports and exports of merchandise

Other synonyms of trade gap include balance of trade, trade balance.

trade gap (noun)	visible balance (noun)
the difference in value over a period of time of a country's imports and exports of merchandise	the difference in value over a period of time of a country's imports and exports of merchandise