Nouns do not describe; adjectives describe nouns. The word 'vary' is not a noun, it's a verb. Words that describe (modify) verbs are adverbs.
Example adverbs that might be used for the verb vary:
The abstract noun for the verb to vary are variation and the gerund, varying.
Related abstract nouns are variant and variety.
What is abstract noun ?
variable
Varies
Various
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
The abstract noun is criticism.
The abstract noun is obligation.
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.
The abstract noun is obligation.
Friendship has not abstract noun because It is a abstract noun
Abstract noun of hopeless
The abstract noun form is tourism.
The abstract noun for the adjective quick is quickness.
The abstract noun for the adjective vacant is vacantness. Another abstract noun form is vacancy.