qualifying adjective

Qualifiying adjectives are "gradable", i.e. it is possible to graduate their intensity, by the addition of an adverb of degree, such as very, quite, enough; most qualifying adjectives can also be put into comparative or superlative forms (big, bigger, biggest). Classifying adjectives cannot be graded: a person is either married, or not, or dead, or not; he or she cannot be "very married", nor "more dead" than another person, at least not under normal usage of the words. That being said, many adjectives can be used either as qualifying adjectives, or as classifying adjectives, depending on the context. Take the example of the adjective old. Examples: My car is very old (qualifying, with a noun) He is intelligent (qualifying, with a pronoun) see Pronouns) The old computer was much quieter than the new model (classifying)
In the first example above, old is a perceived quality, and therefore gradable, in the second old has an absolute value, with the meaning of former or previous.
See gradation and comparison of adjectives below.

Use of adjectives
Adjectives are used in two main ways; they can either be attributive or they can be predicative.
Attributive adjectives :
This is the most common use of adjectives, standing next to a noun in a noun phrase. In English, simple and complex adjectives almost always come before the noun . Examples: The big metal box My dear old grandfather . A very modern plastic dish. An easily recognisable face. A pink and green dress A not-too-infrequent event.

Exceptions:
There are only a very small number of exceptions, notably concerned involved, present and responsible, which have a particular meaning when they come after a noun. There are also some cases in which old and tall follow the noun The other important case when an adjective will follow a noun is when the adjective is postmodified by a prepositional phrase. Examples: All the people concerned were