Is largely an abstract noun

Answer 1

No, the word 'largely' is an adverb, a word used to modify a verb, an adjective, or another adverb.

A noun is a word for a person, a place, or a thing.

An abstract noun is a word for something that can't be experienced by any of the five physical senses; something that can't be seen, heard, smelled, tasted, or touched.

Examples:

The history of the house has largely been forgotten.

• the noun 'history' is an abstract noun, a word for a concept (idea);
• the adverb 'largely' modifies the verb 'been forgotten' as 'for the most part' or 'to a greater degree'.