No, the word 'over' is a preposition, an adverb, and an adjective, not a noun.
Examples:
We drove over the bridge. (preposition)
The soup boiled over. (adverb)
I spoke to the manager about the over billing. (adjective)
There is no abstract noun for the noun 'chair', a word for a physical thing.The abstract noun form for the verb to chair (to preside over) is the gerund, chairing.
Yes, the noun astonishment is an abstract noun, a word for an emotional reaction.
The abstract noun forms of the verb consider are consideration and the gerund, considering.
Is undergone an abstract noun
Concrete noun
The abstract noun is criticism.
The noun 'hopefulness' is an abstract noun, a word for an emotion.
The abstract noun is obligation.
Abstract noun of hopeless
Friendship has not abstract noun because It is a abstract noun
The abstract noun form is tourism.
The abstract noun for the adjective vacant is vacantness. Another abstract noun form is vacancy.