to start with w will define each.
A Muslim is a follower of the religion of Islam.
A Christian a person who has received Christian baptism or is a believer in Jesus Christ and his teachings. and the the 3 trinitys God the Son, God the Father, and God the Holy Spirit. (God the Son, God the Father, and God the Holy Spirit)
(https://www.dictionary.com)
Muslims go by the five pillars of Islam (https://en.wikipedia.org/wiki/Five_Pillars_of_Islam)
Christians go by the 10 commandments(https://www.dummies.com/religion/christianity/catholicism/catholicism-and-the-ten-commandments)
To become Muslim you must utter (totally believes in) the Shahada, one over the five pillars, (There is no god but God. Muhammad is the messenger of God.)
o become Christian you must accept the lord (god) as the one and only god and you can be Baptiste, as a way of ridding your body of sin because Jesus has payed for your sins so you can live in heaven
the idea that there is one god and there is a messenger(s) is common in both. but there are differences in who they believe and why.
