No, the noun 'inside' is a concrete noun, a word for a physical place or space within something.
The word 'inside' is also an adjective, an adverb, and a preposition.
Yes, the noun astonishment is an abstract noun, a word for an emotional reaction.
The noun anger is an abstract noun. You may see an angry face, but that's a face; you may hear the angry voice, but that's the voice. The anger is what the person feels inside.
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.
The abstract noun for the adjective quick is quickness.