[Kratos hesitates again. He has the attention not only of Lloyd, whom he intended, but Colette and Sheena -- and their teacher as well. Disconcert broadcasts to the only person who can hear it, but then Kratos takes a conscious breath and finds the words to answer.]

Well, imagine that the adjective are traits which people wear -- the manner which they show to the world. They can help you distinguish between subjects and objects which are alike.

[Lloyd frowns down at the slate, pointing.]

But they're different. This one's a colour, and this one's a skill.

That doesn't matter. Pretend a colour is clothing, and speed as the result of an exsphere. Either way, it's something which can be worn. Sometimes it isn't necessary to the sentence, like with the 'brown' dog; knowing its colour doesn't necessarily contribute much to the sentence at first glance.

[He rubs that out with his thumb and looks up at Lloyd, but Lloyd's furrowed brow indicates impending confusion.]

So if they're not necessary, why bother having them?

[Kratos hums, glancing up at Colette, whose own homework is forgotten in favour of watching and listening.]

Take Colette. Do you think of her simply as 'the girl'?

[He can practically feel Lloyd bristle beside him, and has to wonder at the strength of that reaction. Hm.]

Of course not! She's Colette! She has a name.

You won't always know the name of a thing. That's what nouns are -- they identify the most basic identity of the being or object. In this case, that's 'fox' and 'dog' -- or 'girl'. Colette's name is a pronoun, which encapsulates everything she is, but if you didn't know her name, you would need some other means of identifying her. If you identified her as 'the girl', then you would also need to distinguish her from Sheena, who is also a girl. That is what adjectives are for.