accurately, at any rate the terms are reciprocally connected, for
the 'ruddered' thing is 'ruddered' in virtue of its rudder. So it
is in all other cases. A head will be more accurately defined as
the correlative of that which is 'headed', than as that of an
animal, for the animal does not have a head qua animal, since
many animals have no head.

Thus we may perhaps most easily comprehend that to which a thing
is related, when a name does not exist, if, from that which has a
name, we derive a new name, and apply it to that with which the
first is reciprocally connected, as in the aforesaid instances,
when we derived the word 'winged' from 'wing' and from 'rudder'.

All relatives, then, if properly defined, have a correlative. I
add this condition because, if that to which they are related is
stated as haphazard and not accurately, the two are not found to
be interdependent. Let me state what I mean more clearly. Even in
the case of acknowledged correlatives, and where names exist for
each, there will be no interdependence if one of the two is
denoted, not by that name which expresses the correlative notion,
but by one of irrelevant significance. The term 'slave,' if
defined as related, not to a master, but to a man, or a biped, or
anything of that sort, is not reciprocally connected with that in
relation to which it is defined, for the statement is not exact.
Further, if one thing is said to be correlative with another, and
the terminology used is correct, then, though all irrelevant
attributes should be removed, and only that one attribute left in
virtue of which it was correctly stated to be correlative with
that other, the stated correlation will still exist. If the
correlative of 'the slave' is said to be 'the master', then,