ADJECTIVES:

    An adjective is a word that tells us more about a noun. (By "noun" we include pronouns and noun phrases.)

An adjective "qualifies" or "modifies" a noun (a big dog).

Adjectives can be used before a noun (I like Chinese food) or after certain verbs (It is hard).

We can often use two or more adjectives together (a beautiful young French lady).

Determiners
the, a/an, this, some, any

 Adjective Order (with Quiz) 
beautiful, long, dark brown

Comparative Adjectives
richer, more exciting

Superlative Adjectives
the richest, the most exciting

Gradable and Non-gradable Adjectives | Quiz

see also:

Noun as Adjective
coffee cup, bus station, research centre