Types and forms of adjectives in German

Question

I am reading this article. In the beginning it is said that there are three type of adjective:

1. Predicative

2. Adverbial

3. Attributive

Then later there is a mention of the comparitive forms of adjective:

1. Basic
2. Comparitive
3. Superlative

In the article, only for superlative was a tie in to the three type of adjective said; how to form superlative in the three type of adjective. However, does there exist the three form of adjective for the Predicative and adverbial form?

Answer 1

Predicative means that the adjective is an argument of a verb that takes a predicative phrase rather than objects. Such verbs are for example sein, werden, bleiben, gelten als and some more. It's not declined then.

• Das ist leicht / leichter / am leichtesten.

Adverbial means that the adjective describes a verb or another adjective. It's also not declined then.

• Sie macht es ihm leicht / leichter / am leichtesten.
• Sie macht es ihm leicht / leichter / am leichtesten verständlich.

Attributive means that the adjective describes a noun. It's declined then.

• Das ist die leichte / leichtere / leichteste Aufgabe.