Islam - n. the religion which teaches that there is only one God and that God's prophet is Muhammad. It is the religion of Muslims

Muslim - n. a follower of Islam

Christianity - n. the religion that teaches that there is only one God and Jesus Christ was the son of God. It is the religion of Christians.

demographics - n. the qualities of a specific group of people, like age, sex and income.

trend - n.  a way of behaving or proceeding  that is developing and becoming more common. Change that is moving in a general direction.

fertility - n. the ability to produce babies

exceed – v. to be greater or more than something

trajectory - n. often used figuratively to describe a path or a process of change or development that leads toward a particular result