The suggestion that words are symbols for things, actions, qualities, relationships, et cetera, is naive, a gross simplification. Words are slippery … - Colin Cherry

Physically, we transmit signals or signs -- audible, visual, tactual. But the mere transmission and reception of a physical signal does not constitute communication. A sign, if it is perceived by the recipient, has the potential for selecting responses in him. Physically, when we communicate, we make noises with our mouths, or gesticulate, or exhibit some token or icon, and these physical signals set up a response behavior.

The theory of communication is partly concerned with the measurement of information content of signals, as their essential property in the establishment of communication links. But the information content of signals is not to be regarded as a commodity; it is more a property or potential of the signals, and as a concept it is closely related to the idea of selection, or discrimination. This mathematical theory first arose in telegraphy and telephony, being developed for the purpose of measuring the information content of telecommunication signals. It concerned only the signals themselves as transmitted along wires, or broadcast through the aether, and is quite abstracted from all questions of "meaning." Nor does it concern the importance, the value, or truth to any particular person. As a theory, it lies at the syntactic level of sign theory and is abstracted from the semantic and pragmatic levels. We shall argue … that, though the theory does not directly involve biological elements, it is nevertheless quite basic to the study of human communication -- basic but insufficient.

"SIGNIFICS" - OR MENTAL HYGIENE (p.219)