The units in which metal type is sold, containing relative proportions of letters appropriate for a given language. [1]
Movable type is the system and technology of printing and typography that uses movable components to reproduce the elements of a document usually on the medium of paper.
Language is a system that consists of the development, acquisition, maintenance and use of complex systems of communication, particularly the human ability to do so; a language is any specific example of such a system.
