However, there are a few options depending on the context:
1. Adjectival (formal): This is the most common and formal term used to refer to the noun form of "adjective." It emphasizes the quality of being adjective-like.
2. Adjective (less formal): Sometimes, you can use "adjective" itself as a noun. This is more common in casual conversation.
3. Descriptive word (general): This is a broader term that encompasses adjectives, adverbs, and other words that describe something.
4. Modifier (grammatical): This is a general term for any word or phrase that modifies another word, including adjectives, adverbs, and phrases.
The best choice depends on the specific context and the level of formality required.