the diference tan the Christians and the Muslims

In a one trevel I sow the art of two diferent empire the Muslims and the Christians.  I am investigated the religión of this two diferent empire and I sow some diference like the building for the muslims there are the mosque and for the christians are the church.

Another diference are the god fore the muslims are "Ala" and for the Christians are"Dios/Jesús". A curiosity of the religión of the Muslims are the traditional mass was make on friday and the christians make on sunday.