Here's why:
* Adjectives modify nouns: They describe the characteristics of a noun. For example, "The red car" or "The big dog."
* Quantifying adjectives specify quantity: They tell us how much or how many of something there is. For example, "Two cars" or "Some dogs."
"Very" is an adverb. It modifies an adjective or another adverb, intensifying its meaning.
For example:
* Very cold (modifies the adjective "cold")
* Very quickly (modifies the adverb "quickly")
Let me know if you have any other word classifications you'd like to explore!