Adjectives describe and give information about nouns and pronouns. They are used in positive, comparative and superlative forms.
Adjectives describe colour, size, shape and quality:
The airballoon was yellow, big and round, the material was stronger than earlier productions, made of kevlar. It was the most fantastic balloon I have ever seen. It is the best ever!
Positive - Comparative - Superlative
Regular adjectives: strong - stronger - the strongest
Longer adjectives: fantastic - more fantastic - the most fantastic
Irregular adjectives: good - better - the best