The noun 'street' is a concrete noun, a word for a physical thing.The noun 'street' is sometimes used in an abstract context, for example, 'a street of dreams' or 'the street of no return'.
The word ingenuity is a noun, an abstract noun; a word for the quality of being clever, original, and inventive. A word for a quality is a word for a thing.
'Work' is mostly an abstract noun since it refers to an action. However, it may also be used as a concrete noun to denote a manufactured article.
Concrete
Perseverance is abstract, not concrete.
There are many synonyms for the word invent. Some of those are: compose, author, imagine, originate, and plan. There is an online thesaurus as well as personal thesauruses for any other synonyms that are needed in the future.
the word is Invention
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.
The abstract noun for the adjective vacant is vacantness. Another abstract noun form is vacancy.