I think the OP is asking how to classify the different types of adjectives. Apologies if I have misunderstood.
Basically, adjectives can be classified by the number of syllables. The rules governing disyllabic adjectives are a bit complicated to go into any great detail but see this question and the answers posted on EL&U if you are curious.
Adjectives consisting of one syllable are monosyllabic
They can also be called one syllable adjectives.
Adjectives with two syllables are bisyllabic or
Or they can simply be called two syllable adjectives
Adjectives with three syllables are trisyllabic or three syllable adjectives
In English, the comparative can be formed either synthetically (prouder) or analytically (more proud). Quirk et al. (1985: 461) identify word length as the major factor in the distribution, suggesting that the synthetic comparative is formed by monosyllabic adjectives, while trisyllabic or longer adjectives form the analytic comparative.
Disyllabic adjectives are said to exhibit variation. While word length does seem to have a strong effect, exceptions such as more apt or
trustworthier indicate that more factors have to be considered.
The English comparative - Phonology and Usage