Adjectives can be used to describe different degrees of comparison about something. For example, we can say that something is large, but we could also say it is larger (than something else) and the largest (of all) when comparing it to other things. These terms seem complicated, but they are just a way of using adjectives to compare one thing to another. Thus, we can breakdown adjectives into the following degree groups:

1. Positive Adjectives: small, old, fast.
2. Comparative Adjectives: smaller, older, faster.
3. Superlative Adjectives: smallest, oldest, fastest.