The noun 'change' is an abstract noun as a word for the act or instance of making or becoming different; a word for a concept.
The noun 'change' is a concrete noun as a word for small amounts of money; a fresh set of clothes; a word for physical things.
The word 'change' is also a verb.
Yes, the noun astonishment is an abstract noun, a word for an emotional reaction.
The noun 'threshold' is an abstract noun as a word for a point of beginning; a level at which something happens or changes; a word for a concept.The noun 'threshold' is a concrete noun as a word for the section of wood or stone that lies under a door.
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 noun leader is an abstract noun as a word for a concept. The group must select a leader. The noun leader is a concrete noun when referring to a specific person. The group leader is Terry. A related abstract noun is a leadership. Popularity is the abstract noun of popular. Abstract Nouns List & Examples Abstract noun is quality or more on something we can only think of, not what we can see or touch. OR Name of anything which can neither be seen nor be touched but can be felt is called abstract noun. For example, beauty, courage, friendship, intelligence, truth etc. Sometimes we can also make abstract noun from adjective like child to childhood, happy to happiness; and from verbs like: know to knowledge. Here is a sample table of changes / formation of Abstract Nouns from Common nouns to Abstract Nouns, Verbs to Abstract Nouns, and Adjective to Abstract Nouns:
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.