The Vietnamese word "bưu thiếp" means "postcard" in English. A postcard is a rectangular piece of thick paper or cardboard that people use to send messages or greetings, usually without an envelope. You can often find postcards featuring pictures of places, landmarks, or artwork.
While "bưu thiếp" primarily refers to postcards, it can also refer to greeting cards in some contexts, especially when they are used for special occasions like birthdays or holidays.