As nouns the difference between letterhead and postcard
is that letterhead is paper which has the name of the person or company it is from printed on the top (possibly including address or other information) used for formal correspondence while postcard is a rectangular piece of thick paper or thin cardboard intended to be written on and mailed without an envelope in the case of a picture postcard one side carries a picture or photograph.
letterhead
English
Noun
(
en noun)
Paper which has the name of the person or company it is from printed on the top (possibly including address or other information). Used for formal correspondence.
postcard
Alternative forms
* post card
Noun
(
en noun)
A rectangular piece of thick paper or thin cardboard intended to be written on and mailed without an envelope. In the case of a picture postcard one side carries a picture or photograph.
See also
* letter