Words that can be considered as the simple subject are known as?

Words that can be considered as the simple subject are known as nouns or pronouns.

Here's why:

* Nouns: Nouns are words that name people, places, things, or ideas. They are the foundation of the subject of a sentence. For example:

* The cat sat on the mat. (Cat is the noun, the simple subject)

* The mountain was very tall. (Mountain is the noun, the simple subject)

* Pronouns: Pronouns are words that replace nouns. They can also function as the simple subject. For example:

* He ran to the store. (He is the pronoun, the simple subject)

* They went to the beach. (They is the pronoun, the simple subject)

Important Note: While nouns and pronouns are the most common simple subjects, other words can sometimes act as the subject, like gerunds (verbs ending in -ing) or infinitives (to + verb).