The abstract noun form of the verb defend is defense.
(The adjective defensive has another noun form, defensiveness, that has a different meaning.)
Yes, the noun astonishment is an abstract noun, a word for an emotional reaction.
Is undergone an abstract noun
The abstract noun is criticism.
Abstract noun of hopeless
The abstract noun is obligation.
Protection Because the noun "protection" denotes an idea rather than a specific object that protects, it is considered an abstract 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 abstract noun for the adjective vacant is vacantness. Another abstract noun form is vacancy.
The noun childhood is a singular, common, abstract, compound noun; a word for the time of being a child.