Also means
to connect, to pass on
Usage Note
Communiquer means both to share information and, physically, to connect two spaces: ces deux pièces communiquent ('these two rooms connect'). The reflexive se communiquer means 'to spread' (as of a fire or disease). The related noun communication is very high-frequency in French.
Examples
"Il est difficile de communiquer sans mots."
Natural Translation
It is difficult to communicate without words.

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