Nouns are words that name or identify general people, places, things, or ideas.
Nouns that name people: man, woman, child, teacher, boss, driver, scientist, pilot, and so on.
Nouns that name places: city, country, kitchen, river, lake, school, church, hospital, and so on.
Nouns that name things: chair, flower, mouse, pencil, photograph, sandwich, and so on.
Nouns that name ideas: comfort, energy, success, memory, friendship, love, peace, dream, and so on.