No, the noun 'red' is a concrete noun, a word for something that can be seen, a word for a physical thing.
The abstract noun for the adjective tolerant is tolerance.
Abstract.
The abstract noun for "discuss" is "discussion."
The abstract noun for "loud" is loudness.
The abstract noun for insult is "insultation."
You could say redness.
No, the noun 'redness' is a concrete noun, a word for something that can be seen.
The abstract noun for red is "redness." It refers to the quality or state of being red.
Redness
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.
Abstract noun of hopeless
The abstract noun is obligation.
Friendship has not abstract noun because It is a abstract noun