First-class mail and Mail

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

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

Mail noun - Communications or parcels sent or carried through the postal system.

First-class mail and mail are semantically related. Sometimes you can replace phrase "First-class mail" with "Mail", this terms are similar.

Nearby Words: mailed, mailing, mailer, mailbox