Is the word "large" an Adverb, Adjective, Pronoun, or Noun?
Large is an adjective.
Adjectives are describing words that modify nouns. They tell things about the noun like: "what kind of", "how many", and "which one".
Here are some descriptive adjectives:
yellow, enormous, many, tiny, hairy, that
The word "large" is an adjective telling "what kind of".