contraction of you are <I don't think you're doing that correctly!>

a possessive case of you used to indicate belonging <Your dog is on the coffee table.>

belonging to or associated with oneself or any person in general <After you pass the fireworks stand, the movie theater will be on your left.>

an informal indication of a group or particular type of things (sometimes used to convey familiarity) <You can learn more about these words in your standard dictionary.>