A green being
Plants cannot communicate with one another.
Electronically.
They communicate with each other by touching their antennae with one another. If red ants come upon another ant they do so to tell if they are from the same nest.
We communicate using sound waves by talking and listening to one another!
talking
they grunt to communicate
morse code.
A synonym for martians is "Aliens".
They used smoke signals to communicate with one another.
a wolf communicates with one another with it's spine tingling howl
they invented twitter to communicate with one another