Adjectives are words used to describe or modify nouns. They give the reader more information about a noun. Use adjectives to make your writing more interesting.
Examples:
a good essay
the intelligent student
our hard-working leader
Some adjectives can be used for comparing different things.
Examples:
Vancouver is cold. Toronto is colder. Winnipeg is coldest.
This book is good. That book is better. My book is the best.