The words we use in our everyday lives fall into a number of categories. These categories (classes) help us to form coherent sentences, allowing us to communicate with each other efficiently.
A word that is used to identify - a person, a thing, or an idea. There are many types of nouns, can you list them all?.
A word that describes what a person or thing does, or what happens. There are many types of verbs, can you list them all?.