No, the word 'again' is not a noun. The word 'again' is an adverb, a word that modifies a verb, an adjective, or another adverb.
Example: I enjoyed the resort so much that I will go again.
The abstract noun forms of the verb 'repeat' are repetition and the gerund, repeating.The word 'repeat' is also a noun form as a word for something that occurs or is done again; a word for a radio or TV program that is run again; a word for a thing.The noun 'repeat' is an abstract noun or a concrete noun, depending on the use of the noun.
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
The abstract noun form is tourism.
The noun 'Precious' (capital P) is the name of a person, a proper noun, a concrete noun.The word 'precious' (lower case p) is an adjective, a word to describe a noun.The abstract noun form of the adjective precious is preciousness, a common noun.
The abstract noun for the adjective vacant is vacantness. Another abstract noun form is vacancy.