* Person: Refers to a human being, either singular or plural.
* Examples: John, the teacher, students, the family
* Place: Refers to a location or geographical area.
* Examples: school, park, city, country
* Thing: Refers to an object, concept, or idea.
* Examples: book, chair, happiness, freedom, the internet
These terms help us understand the basic functions of nouns and make it easier to identify the subject of a sentence or clause. However, it's important to note that these categories are not always rigid and can sometimes overlap. For example, a "company" could be considered a "thing" but also represents a group of people.