"Moshiach" is Hebrew for "messiah."
Christians believe that Jesus was the Moshiach.
Moshiach Messiah refers to the redemption of the Jewish people. However, Chabad people are in a controvery about whether their leader is the Moshiach or G-d. This conflict reamins unresolved.
Yechi Adoneinu Morainu V'rabainu Melech Ha Moshiach Lolam Ved!