You should learn the concepts of the Two-Element Metaphyscis.
Objective means by definition.
Subjective means by description.
Language rests upon a convention of names. A definition is the preservation of the social convention which preserves an identity between the name of a thing and the names of that things two elements, its form and the material difference in that form.
Thus, of the three categories of names, only 1 can be defined the names of things,
The names of that things elements cannot be defined, they must be learned by what Aristotle called induction, or some have called senory abstraction. I simply say abstraction.
To help effect participation in the naming convention a description provides directions to a thing by which an abstraction can be made.
Suffice it to say, where definitions are absolute, descriptions are relative, many descriptions can lead to the same abstraction.
However, the description cannot abstract for one. That is up to one's own abilities.
Thus, unlike modern scholars who believe that words define words ad infinitem, there were ancients who had real understanding.