No. They are not the same.
St John the Apostle was a former fisherman who was called to be one of the twelve disciples whom Jesus taught and trained during his ministry here on earth (Luke 5:1-11). John the Baptist was Jesus' cousin, born to Elizabeth and Zacharias (Luke 1:1-80; 3:1-18) who preached repentance to the Jews prior to Jesus' earthly ministry. John the Baptist is also call the "forerunner" of Christ because of his ministry to prepare others to receive Jesus' message of salvation.
No.
Yes. they are different ways of descibing the same person.
No. John the Baptist did not write any books in the New Testament.
Elizabeth is the mother of John. Salome is the one that had John killed.
No.
No.
No.
The name St. Elizabeth usually refers to the mother of John the Baptist who is a different person from Elizabeth of Hungary.
John the Baptist.
No, he wasn't. It was his son who ordered the death of the John the Baptist.
About the same.
The apostle John is not the same person as John the Baptist The apostle John wrote the books of Revelation,John, and the 1st,2nd,and 3rd books of John The apostle John was the last apostle living on earth The apostle John referred to himself along with his brother James as the "sons of Zebedee". One reason for this was so that he was not confused with John the Baptist.