THE NATURAL SOUND SOURCE
natural sounds which early men and
women heard around them. When
an object flew by, making a CAW-
CAW sound, the early human tried
to imitate the sound and used it to
refer to the thing associated with the
sound
The fact that all modern
languages have some words with
pronunciations that seem to echo
naturally occurring sounds could
be used to support this theory
when another flying creature made a
COO-COO sound, that natural sound
was adopted to refer to that kind of
object.