System of Communication, E.g. Italian, Mandarin
Puzzle 3 of Fast Food Piece of Cake Pack
Question is: System of Communication, E.g. Italian, Mandarin
and the answer is: LANGUAGE
Word Meaning:
LANGUAGE — (countable) A body of words, and set of methods of combining them (called a grammar), understood by a community and used as a form of communication.
Definitions from Wiktionary.