In grammar, an adjective is a 'describing' word; the main syntactic role of which, is to qualify a noun or noun phrase, giving more information about the object signified. They are one of the traditional eight parts of speech, although linguists today distinguish adjectives from words such as determiners.
A countable noun is one that can be expressed in plural form, usually with an "s." For example, "cat--cats," "season--seasons," "student--students."
An uncountable noun is one that usually cannot be expressed in a plural form. For example, "milk," "water," "air," "money," "food." Usually, you can't say, "He had many moneys."
Most of the time, this doesn't matter with adjectives. For example, you can say, "The cat was gray" or "The air was gray." However, the difference between a countable and uncountable noun does matter with certain adjectives.
It would be folly, of course, to run more than two or three (at the most) adjectives together. Furthermore, when adjectives belong to the same class, they become what we call coordinated adjectives, and you will want to put a comma between them: the inexpensive, comfortable shoes.
Limiting adjectives do as their name suggests, they limit the noun being described. There are nine types of limiting adjectives.The Nine Types of Limiting Adjectives:
Definite & Indefinite Articles
Nouns used as Adjectives
Adjectives which appear directly beside the noun, most commonly before, are called attributive, because they attribute a quality to the noun they modify. More than one adjective can modify the same noun. Adjectives which appear after a linking verb are called predicative, because they form part of the predicate. They modify the subject of the sentence or clause (a clause is a portion of a sentence which contains a subject and a predicate).
An adjective can be modified by an adverb, or by a phrase or clause functioning as an adverb.
It is sometimes said that the adjective is the enemy of the noun. This is because, very often, if we use the precise noun we don't need an adjective. For example, instead of saying "a large, impressive house" (2 adjectives + 1 noun) we could simply say "a mansion" (1 noun).
Single-syllable adjectives use -er and -est endings to designate comparative and superlative forms. Adjectives of two or more syllables use more and most for comparative and superlative forms. Two-syllable adjectives ending in -y may also use the -er / -est endings to designate comparative and superlative.
Unlike Adverbs, which often seem capable of popping up almost anywhere in a sentence, adjectives nearly always appear immediately before the noun or noun phrase that they modify. Sometimes they appear in a string of adjectives, and when they do, they appear in a set order according to category. When indefinite pronouns — such as something, someone, anybody — are modified by an adjective, the adjective comes after the pronoun:
If a group of words containing a subject and verb acts as an adjective, it is called an Adjective Clause. If an adjective clause is stripped of its subject and verb, the resulting modifier becomes an Adjective Phrase
When they describe nouns or pronouns, adjectives typically answer the following questions: What kind? Which one? How many?