Spoken or Written Communication
This page is the CodyCross answer for the clue below from Train Travel, Group 705, Puzzle 1 (Folding Seats).
Question is: Spoken or Written Communication
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.