The abstract noun form for the adverb seldom is seldomness.
The abstract noun form of the verb to choose is the gerund, choosing.A related abstract noun is choice.
The abstract noun form for the verb to frequent is frequency.The abstract noun form for the adjective frequent is frequentness.
The abstract noun forms of the verb to diversify are diversification and the gerund, diversifying.A related abstract noun is diversity.
The abstract noun for the adjective similar is similarity.
The noun form for the adjective mad is madness.
The abstract noun for the adjective honest is honestness.A related abstract noun form is honesty.
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.
Looking is a gerund for the verb to look, and gerunds are seldom concrete nouns, as they represent actions that cannot be touched although the people and things doing them can be. Looking has no adjective form and no related abstract noun, unlike the synonym watching (watchful, watchfulness).
The abstract noun for the adjective vacant is vacantness. Another abstract noun form is vacancy.