The noun 'detour' is an abstract noun as a word for a departure from a direct course or the usual procedure; a word for a concept.
The noun 'detour' is a concrete noun as a word for a physical route designated around an obstructed road.
Yes, the noun 'detour' is an abstract noun, a word for a deviation from a direct course of action or travel; a word for a concept.
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.
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.
Detours is the plural form.
The abstract noun for the adjective vacant is vacantness. Another abstract noun form is vacancy.