Language
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; and a language is any specific example of such a system.
Subsidiary
A subsidiary, subsidiary company or daughter company is a company that is owned or controlled by another company, which is called the parent company, parent, or holding company. The subsidiary can be a company, corporation, or limited liability company. In some cases it is a government or state-owned enterprise. In some cases, particularly in the music and book publishing industries, subsidiaries are referred to as imprints.