It is not unusual, by way of explaining what is meant by a general name, to say that it is the name of a _class_. But this, though a convenient mode of expression for some purposes, is objectionable as a definition, since it explains the clearer of two things by the more obscure. It would be more logical to reverse the proposition, and turn it into a definition of the word _class_: “A class is the indefinite multitude of individuals denoted by a general name.” It is necessary to distinguish _general_ from _collective_ names. A general name is one which can be predicated of _each_ individual of a multitude; a collective name cannot be predicated of each separately, but only of all taken together. “The 76th regiment of foot,” which is a collective name, is not a general but an individual name; for although it can be predicated of a multitude of individual soldiers taken jointly, it cannot be predicated of them severally. We may say, Jones is a soldier, and Thompson is a soldier, and Smith is a soldier, but we cannot say, Jones is the 76th regiment, and Thompson is the 76th regiment, and Smith is the 76th regiment. We can only say, Jones, and Thompson, and Smith, and Brown, and so forth, (enumerating all the soldiers,) are the 76th regiment. “The 76th regiment” is a collective name, but not a general one: “a regiment” is both a collective and a general name. General with respect to all individual regiments, of each of which separately it can be affirmed; collective with respect to the individual soldiers, of whom any regiment is composed. § 4. The second general division of names is into _concrete_ and _abstract_. A concrete name is a name which stands for a thing; an abstract name is a name which stands for an attribute of a thing. Thus, _John_, _the sea_, _this table_, are names of things. _White_, also, is a name of a thing, or rather of things. Whiteness, again, is the name of a quality or attribute of those things. Man is a name of many things; humanity is a name of an attribute of those things. _Old_ is a name of things; _old age_ is a name of one of their attributes.