The God of Christianity is expressed as a Trinity, which means it holds three attributes, The Father, The Son & The holy Ghost.
In translation this means that the God of Christianity, is represented by three distinctive differing forms of the same person, being or God.
The "Father" is considered God, The "Son" is considered God, and the "Holy Ghost" is also considered to be God as well. This is a distinctive difference from many modern religions where a single God is only represented as itself.
So with that said whenever someone refers to Jesus, they are actually referring to the Lord or to God himself, as well as in its repetitive usage throughout the biblical text of Christianity, no matter what edition that was printed.
Many primitive and ancient religions though, have similar characteristics to this usage of multiple representations of a single Deity, but as for modern religions I do believe this is one major difference that sticks out like a sore thumb.