You're

your
possessive adjective
1 belonging to or associated with the person or people that the speaker is addressing : what is your name?
2 belonging to or associated with any person in general : the sight is enough to break your heart.
• informal used to denote someone or something that is familiar or typical of its kind : I'm just your average Joe | she is one of your chatty types.
3 ( Your) used when addressing the holder of certain titles : Your Majesty | Your Eminence.
ORIGIN Old English ēower, genitive of gē (see ye 1 ), of Germanic origin; related to German euer.

you're
contraction of you are
"You're an angel, Deb!"

Ur
an ancient Sumerian city, formerly on the Euphrates River, in southern Iraq. One of the oldest cities in Mesopotamia, dating from the 4th millennium bc, it reached its zenith in the late 3rd millennium bc.