1. Subclasses
1.1. Relative adjectives (e.g. wood – a wooden hut, history – a historical event).
1.2. Qualitative adjectives (e.g. a difficult task – a very difficult task).
1.2.1. One and some two syllabic adjectives that form their degrees by the help of inflections -er and -est respectively: short - shorter - the shortest
1.2.2. The adjectives which form their degrees by means of root-vowel and final consonant change: many - more - the most
1.2.3. The adjectives that form their degrees by means of suppletion: good - better - the best
1.2.4. Many - syllabic adjectives which form their degrees by means of the words "more" and "most": interesting - more interesting - the most interesting
2. The category of the degrees of comparison
2.1. comparables: hot, beautiful, pleasant, ugly, etc.
2.1.1. positive degree
2.1.1.1. no features of comparison
2.1.2. comparative degree
2.1.2.1. the feature of restricted superiority
2.1.3. superlative degree
2.1.3.1. the feature of unrestricted superiority
2.2. non-comparables: wooden, Crimean, mathematical, etc.
3. Statives
3.1. denote "states"
3.2. preffix a-
3.3. do not possess the category of the degrees of comparison
3.4. are characterised by the absence of the righthand combinability with nouns
3.5. For examples: aware, afraid, ashamed, agog, afire etc.
4. Characteristics
4.1. syntactical
4.1.1. an attributive
4.1.1.1. a group of words which describes a noun
4.1.2. a predicative
4.1.2.1. a group of words with a verb which describes a noun
4.2. semantic
4.2.1. describe nouns
4.2.1.1. if the adjective is placed in a nominatively self-dependent position, this leads to its substantivisation
4.3. morphological
4.3.1. the category of comparison