Thirdly, When the signification of the word is referred to a standard,
which standard is not easy to be known.

Fourthly, Where the signification of the word and the real essence of
the thing are not exactly the same.

These are difficulties that attend the signification of several words
that are intelligible. Those which are not intelligible at all, such
as names standing for any simple ideas which another has not organs or
faculties to attain; as the names of colours to a blind man, or sounds
to a deaf man, need not here be mentioned.

In all these cases we shall find an imperfection in words; which I shall
more at large explain, in their particular application to our several
sorts of ideas: for if we examine them, we shall find that the NAMES OF
_M_IXED _M_ODES ARE MOST LIABLE TO DOUBTFULNESS AND IMPERFECTION, FOR
THE TWO FIRST OF THESE REASONS; and the NAMES OF _S_UBSTANCES CHIEFLY
FOR THE TWO LATTER.


6. The Names of mixed Modes doubtful.

First, The names of MIXED MODES are, many of them, liable to great
uncertainty and obscurity in their signification.

I. Because the Ideas they stand for are so complex.

Because of that GREAT COMPOSITION these complex ideas are often made
up of. To make words serviceable to the end of communication, it is
necessary, as has been said, that they excite in the hearer exactly the