vs
QUICK ANSWER
"María" is a form of "María", a proper noun which is often translated as "Mary". "Tu" is a form of "tu", an adjective which is often translated as "your". Learn more about the difference between "María" and "tu" below.
tu(
too
)An adjective is a word that describes a noun (e.g., the big dog).
1. (informal) (possessive)
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).