The word 'comparative' is both an adjective and a noun. The noun 'comparative' is a word for the middle degree of an adjective or adverb; a thing equivalent to another. Example: The comparative of the adjective short is shorter. The noun form of the adjective 'comparative' is comparativeness.
The word root is wild. "Wilder" is what might seem like the comparative, but this word is not used as the comparative of wild (instead, it has a different meaning). The proper comparative form would be "more wild."
The word "I'll" does not have comparative and superlative forms, because it is not an adjective. "I'll" is a contraction for "I will". The word "ill", however, is an adjective, and the comparative and superlative forms are "more ill" and "most ill".
Yes, the word 'comparative' is an adjective and a noun. The noun 'comparative' is a word for a degree of adjective or adverb. Examples: When something is better than good but not the best, use the comparative. (noun) The comparative form of the adjective good is better. (adjective)