Stand in for a noun without repeating it — from I and me to who, this, and each other.
I, you, he, she, it, we, they — the basic words for people and things.
I vs. me, he vs. him — choosing the right form by position in the sentence.
Mine, yours, hers — standing alone to show what belongs to whom.
My vs. mine, her vs. hers — before a noun, or standing on their own.
Myself, yourself, themselves — when the action comes back to the subject.
This, that, these, those — pointing to something near or far.
Who, whose, what, which — the question words that ask for a noun.
Each other, one another — a mutual action shared between people.
Someone, anything, nobody — talking about people and things without naming them.
Who, which, that, whose — adding extra information about a noun.