An abstract noun is a noun that indicates an intangible concept such as an emotion, a feeling, a quality, or an idea. In other words, an abstract noun does not denote a physical object.
Here are some more examples of abstract nouns categorized under conceptual headings:Here are some more examples of abstract nouns categorized under conceptual headings:
Feelings anxiety, fear, pleasure, stress, sympathy
States being, freedom, misery, chaos, luxury
Emotions anger, hate, joy, grief, sorrow
Qualities courage, patience, determination, generosity, honesty
Concepts charity, deceit, opportunity, comfort, democracy
Moments birthday, childhood, marriage, career, death