Definition:
a noun is a word or phrase used to name a person, animal, place, thing, or idea. A thing can be used as a noun to refer to an inanimate physical object, quality, or concept.
Examples:
1. I spotted a strange thing lurking in the shadows.
2. Things kept disappearing from my room in the middle of the night.
3. She had been saving up for months to buy that one special thing.