Economy class and Y class

Economy class noun - A class of accommodations on a ship or train or plane that are less expensive than first class accommodations.

Y class and economy class are semantically related. in inexpensive class of travel topic. In some cases you can use "Y class" instead a noun phrase "Economy class".

Economy class and Y class are semantically related. Sometimes you can replace phrase "Economy class" with "Y class", this phrases are similar.