* These is a demonstrative pronoun. Demonstrative pronouns point to specific things or people. "These" indicates something close to the speaker or writer.
* Mom is a noun. Nouns are words that name people, places, things, or ideas. While "Mom" can sometimes function as a pronoun (like in "I called Mom"), in this case, it is simply a noun.
Let me know if you'd like to explore other types of pronouns!