Y said:
Just to clarify this: Do you mean that
"this is NOT a denomination" the same thing as
"this is NOT a religion" Right ?
Pretty much the same. Religion is the general term, and denominations are specific names. Relgion is a system of beliefs and practices. Denominations are systems of very specific beliefs and practices within that religion.
Example:
"Christianity" is called a religion.
Methodist is a denomination.
Episcopal is a denomination.
Lutheran is a denomination.
Presbyterian is a denomination.
"Jewish" is called a religion.
Orthodox is a denomination.
Reform is a denomination.
Conservative is a denomination.
"Catholic" is called a religion.
Roman Catholic is a denomination.
Eastern Orthodox is a denomination.
Greek Orthodox is a denomination.
Russian Orthodox is a denomination.
"Islam/Muslim/Moslem" is called a religion.
Shiite is a denomination.
Sunni is a denomination.
Black Muslims (Nation of Islam) is an American denomination
Each religion might not actually call their subdivisions "denominations" but that is the basic way they are organized. For example, Islamic divisions are called "branches" but it is the same basic idea.