That is the correct spelling of the term "round trip" (there and back). If it is used as an adjective, it should be hyphenated (e.g. round-trip ticket) because otherwise it could be read as two separate adjectives.
The term could be ferrying, or possibly the term round-trip (only rarely hyphenated as a noun).It could also refer to the process of borrowing.
The correct spelling of the term is hyphenated "merry-go-round" (carousel).
No
Mostar Round-Trip was created in 2011.
Round Trip to Mars was created on 1957-09-23.
As low as $186 round trip.
The idiomatic adjective is spelled hyphenated as all-round (versatile, or comprehensive, e.g. an all-round athlete or education) .
It is one word (not hyphenated) when used as a noun and two words when used as a verb:The newspaper featured a weekly roundup of amusing photos.It was time to round up the children and bring them inside.
Round Trip - Sadao Watanabe album - was created in 1974.
A Greyhound round-trip means you are paying for the return trip in advance. Some round-trip tickets are open-ended (with no designated return date) or have a set date (and time) for returning to the departure location.
The round trip distance between Dallas and Houston is approximately 500 miles.