No, the word 'when' is not a noun. The word 'when' is is an adverb and a conjunction.
Examples:
When are you coming home? (adverb)
You can call me when you get into the station. (conjunction)
Yes, "when" is a relative adverb or conjunction used to introduce a clause indicating the time at or during which an action takes place. It is not an abstract noun.
Yes
The abstract noun for the adjective tolerant is tolerance.
Abstract.
The abstract noun for insult is "insultation."
The abstract noun for "loud" is loudness.
The abstract noun for "discuss" is "discussion."
Is cheer an abstract noun or a concrete 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.
Friendship has not abstract noun because It is a abstract noun
Abstract noun of hopeless
The abstract noun is obligation.
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.