Christos is a Greek word; its Hebrew equivalent is Moshiach, or Messiah — in the modern spelling; the Sanskrit equivalent is
Christ is the One Who attained the Abode of the Father, became His Part, and then came to the Earth as a Divine Teacher coessential with the Father.
Christ is not the last name of Jesus as many believers think,
but rather a title or a post.
There was one Jesus Christ, but there were many Christs throughout the entire history of mankind. Jesus was the only and the first Christ for those people with whom He communicated directly during His earthly life.
Explanation of the term Christ is found, in particular, in the Gospel of Philip:
“Jesus is a man’s name. Christ is a title. For this reason, the name Jesus has no equivalents in other languages; He was just named Jesus.
“Christ in Syriac sounds Messiah, but Christ is a Greek word. All other languages also have this word — in their pronunciation.”
The Gospel of Philip (with commentaries)