Listen to this. Ah, yes, never pass to have a chance to hear a nightingale.

Beyond words. Sobs, hums, spatters, and other vocalisations.

Communicating without words. Steven, it’s been like a riddle, isn’t it, because we got vocal noises that aren’t words, but which do have meaning. Can you give me some examples of the kind of thing we’ve talked about?

Well, look, the best way to explain it is through a New York cartoon, which has two tigers and one of them says to the other, "grim, grunt, grizzly". There are many other good  “grrrrr” words, and of course, the answer is yes, that’s tiger, but is also “growl”, that  presumably that they are doing. There is no particular reason why the letters G and R should be associated with all these consequences that seem to have a kind of meaning, but an arbitrary meaning. Well, not entirely arbitrary, because you go grrrrrrr, you know.  

So that turns out to be quite a lot of words, some which have a meaning that relates to the kind of thing we might be doing when we are making a noise. Others are entirely arbitrary. There are a large number of words in English beginning in GL: gleam, glisten, glint, and so forth, that seem to have to do with light.But there is no sense at all in which. GL isn’t particularly luminous. It’s just kind of a freak.