Airmails are letters or packages sent by air transport. There are several synonyms that can be used interchangeably with the word airmails such as air post, air parcel, air package, air freight, or air consignment. These terms refer to the same concept of sending a package or letter by air rather than by land or sea transport. Airmail services are often used for sending urgent or time-sensitive items, as they can be delivered quickly to their destination. In summary, airmails can be referred to by several synonyms, all of which denote the transportation of a package or letter by air.