1. A word representing a person, place, thing, or idea.
Noun
A word representing a person, place, thing, or idea.

2. Person:
child
teacher
Place:
park
school
Thing:
table
disease
Idea:
kindness
generosity

3. Nouns can be either concrete or abstract
Nouns can be either concrete or abstract. Concrete nouns are objects that can be sensed; abstract nouns are concepts that cannot be touched or seen.
Concrete:
door
desk
television
mountain
Abstract:
chemistry
relaxation
argument
loneliness

4. Nouns can also be common or proper; proper nouns are specific examples of common nouns, and always have the first letter capitalized.
Common nouns:
state
car
park
school
Proper nouns:
California
Chevrolet
Disneyland
Quartz Hill High School

5. The plurals for most nouns are formed by adding –s or –es.
--s es
book / books hero / heroes
apple / apples potato / potatoes

6. Words that end in “y” have two rules when converting to plurals
Words that end in “y” have two rules when converting to plurals. Sometimes you just add –s. Other times, you change the “y” to “i” and add –es. The letter directly in front of the “y” determines which way you form the plural.
When the letter in front of the “y” is a vowel, you only add –s:
donkey / donkeys jockey / jockeys
When the letter in front of the “y” is a consonant, change the “y” to “i” and add –es:
berry / berries tendency / tendencies