Thus, though the killing of an old man be as fit in nature to be united into one complex idea, as the killing a man's father; yet, there being no name standing precisely for the one, as there is the name of PARRICIDE to mark the other, it is not taken for a particular complex idea, nor a distinct species of actions from that of killing a young man, or any other man.
5.

The Cause of making mixed Modes.
If we should inquire a little further, to see what it is that occasions men to make several combinations of simple ideas into distinct, and, as it were, settled modes, and neglect others, which in the nature of things themselves, have as much an aptness to be combined and make distinct ideas, we shall find the reason of it to be the end of language; which being to mark, or communicate men's thoughts to one another with all the dispatch that may be, they usually make SUCH collections of ideas into complex modes, and affix names to them, as they have frequent use of in their way of living and conversation, leaving others which they have but seldom an occasion to mention, loose and without names that tie them together: they rather choosing to enumerate (when they have need) such ideas as make them up, by the particular names that stand for them, than to trouble their memories by multiplying of complex ideas with names to them, which they seldom or never have any occasion to make use of.
6.

Why Words in one Language have none answering in another.
This shows us how it comes to pass that there are in every language many particular words which cannot be rendered by any one single word of another.

For the several fashions, customs, and manners of one nation, making several combinations of ideas familiar and necessary in one, which another people have had never an occasion to make, or perhaps so much as take notice of, names come of course to be annexed to them, to avoid long periphrases in things of daily conversation; and so they become so many distinct complex ideas in their minds.

Thus ostrakismos amongst the Greeks, and proscriptio amongst the Romans, were words which other languages had no names that exactly answered; because they stood for complex ideas which were not in the minds of the men of other nations.