An English Grammar - The Original Classic Edition. Witt William

For instance, road is a word that names any highway outside of cities; wagon is a term that names any vehicle of a certain kind used

       for hauling: the words are of the widest application. We may say, the man here, or the man in front of you, but the word man is here hedged in by other words or word groups: the name itself is of general application.

       Name for a group or collection of objects.