A thought on some difference between what the words Judaism and Christianity generally signify:
Judaism is the Jew’s religion/faith as defined under Moses and other Old Testament/Covenant prophets.
Denominations of Judaism include but are not limited to the Pharisees, Sadducees, and Hebrew Israelites who reject the New Testament/Covenant Jesus (Yeshua/Yahawashi) Christ. These are imperfect implementations, interpretations, and applications of the base Judaism.
Christianity is the Christian’s religion/faith as defined under Christ and his apostles.
Denominations of Christianity include but are not limited to Catholics, Baptist, Seventh Day Adventist and Hebrew Israelites (HI) who believe in the New Testament/Covenant Jesus (Yeshua/Yahawashi) Christ. These are imperfect implementations, interpretations, and applications of the base Christianity.
I know some HI and perhaps others do not associate with the word Christian and Christianity due to imperfection in beyond the Bible practices of Christianity so I don’t mean any disrespect. I am just stating my view.
Much Godly Love, Peace and Blessing