A noun is a word that refers to people, things, places, and ideas. A noun can be classified as an abstract noun or a concrete noun. A concrete noun refers to nouns that can be perceived through our five senses. This includes sight, touch, smell, taste, and sound. It means you can see, touch, hear, or smell something. Examples of concrete nouns are Tiger, London, Book, Mary, and so on.
Abstract nouns are the exact opposite of concrete nouns. It refers to nouns that cannot be perceived with the five senses. It refers to ideas and beliefs. Examples include Patience, happiness, oppression, anger, energy, pride, love, education, and much more.