Yes, the noun 'mentor' is an abstract noun for a person who advises or trains. A specific mentor is a concrete noun. Examples:
abstract: The Action Council can provide a mentor to help with your business start up.
concrete: This is my mentor, John Smith, who is helping with my business start up.
The noun 'hopefulness' is an abstract noun, a word for an emotion.
Abstract
Yes, future is an abstract noun.
The noun 'generosity' is an abstract noun, a word for a quality of someone or something.
Examples of abstract, concrete noun combinations:Statue of Liberty (statue is a concrete noun; liberty of an abstract noun)science building (science is an abstract noun; building is a concrete noun)bargain basement (bargain is an abstract noun; basement is a concrete noun)the noun 'air' is a concrete noun as a word for the substance that surrounds the earth; the noun 'air' is an abstract noun as a word for the ambiance of a place.the noun 'heart' is a concrete noun as a word for an organ of the body; the noun 'heart' is an abstract noun as a word for the essence of something.the noun 'edge' is a concrete noun as a word for the sharp side of a blade; the noun 'edge' is an abstract noun as a word for an advantage.
Mentor is a noun for one who aids or helps educate another. One abstract noun could be mentorship.
The word mentor is a singular, common, abstract noun; a word for an experienced person who helps someone who has less experience, a word for a relationship.
The abstract noun is quota, a word for a limit on the number or amount of people or things that are allowed; a specific amount or number that is expected to be achieved; a word for a concept.
Yes, the noun astonishment is an abstract noun, a word for an emotional reaction.
Is undergone an abstract noun
Concrete noun
The abstract noun is criticism.
The noun 'hopefulness' is an abstract noun, a word for an emotion.
Since that word is an eponym (a common noun made from a proper noun), the first mentor was clearly Mentor, the mentor of Telemachus.
The abstract noun is obligation.
Friendship has not abstract noun because It is a abstract noun
Abstract noun of hopeless