First class and Mailing

First class noun - Mail that includes letters and postcards and packages sealed against inspection.

Mailing and first class are semantically related. In some cases you can use "Mailing" instead a noun phrase "First class".

Mailing noun - Mail sent by a sender at one time.

First class and mailing are semantically related. Sometimes you can use "First class" instead a noun "Mailing".

Nearby Words: mail, mailed, mailer, mailbox