The person leading the service, is usually called a shaliach (or shlicha if female), which is short for shaliach tsibor (שליח ציבור), "public representative".
the Shaliach in many synagogues is either a Rabbi or a Cantor, but this is not a requirement to be a shaliach, and many synagogues don't have either one.
To lead a Jewish service, a person only has to be Jewish and over the age of 13 (and a few other situational requirements). Orthodox synagogues usually (but not always) require the shaliach to be male unless it is an all-female group.
A Cantor Sings in the worship services in a Synagogue. It's a Jewish person who worships and leads the singing in a synagogue. I am actually reading a book about it right now. Very interesting ;)
The person who leads the prayers is called a 'cantor'.
Any Jewish person over the age of 13 can lead Jewish services. In orthodox tradition, this person must be a man. Rabbis are Jewish teachers, and in most synagogues the Rabbi leads the service, though this is not a requirement.
The Solo singer or singing leader in Jewish and Christian liturgical music is called the cantor.
Cantor
Any Jewish person over the age of 13 can lead a synagogue service, as long as at least 10 Jews are present. Often the Rabbi or Cantor leads the service, but this is not a requirement. In orthodox tradition, only a man can lead a service, unless there are only women present.
The cantor.
Each Jewish community has its Rabbi or Rabbis; there is (today) no central person.
The guy who leads services at synagogue.
The Rabbi leads the order of the service and the Cantor leads the prayers.
The lay (non-ordained) minister who leads the hymns and the responsorial psalms is called the cantor.
Often it is placed in the front, near the lectern at which the person stands who leads the prayers.