Other words that are commonly misused
their = belonging to them
Their house is gorgeous.
there = a direction
The house is over there!
they're = they are
They are lucky to have that house.
then = to show time
We purchased popcorn and then the movie started.
than = to show comparison
I like unsalted popcorn better than salted popcorn.
weather = atmospheric condition
The weather today is sunny and hot.
whether = indicates a choice
I will blast the music whether you want me to or not!
who = the subject of a sentence
Who goes there?
whom = the object of an action
I will deliver the book for you, but to whom?
your = belonging to you
Your purse is in the closet.
you're = you are
You're not getting your purse back until you eat some ice cream with me.