One of the biggest religions in the world is Christianity. One branch of that is Lutheran. There are other branches too, including Methodism, Catholicism, and Presbyterianism. Christianity is the more significant category, and Lutheran is a sub-category of Christianity. Lutherans follow Martin Luther’s teachings and beliefs. However, some of those beliefs are part of Christianity. However, Christians follow the Roman Catholic Church.
There may be a few beliefs and procedures that are not the same for every Christian. For example, Catholics hold mass and have communion during every service. Lutherans may not as well as other denominations of Christianity. Martin Luther wrote 95 theses because he did not like how the church was functioning. He posted the arguments on the church’s door.