1.  muslimism(n = noun.group) islam - the civilization of Muslims collectively which is governed by the Muslim religion; "Islam is predominant in northern Africa, the Middle East, Pakistan, and Indonesia"
is a kind of civilisation, civilization

2.  muslimism(n = noun.cognition) islam, islamism, mohammedanism, muhammadanism - the monotheistic religious system of Muslims founded in Arabia in the 7th century and based on the teachings of Muhammad as laid down in the Koran; "Islam is a complete way of life, not a Sunday religion"; "the term Muhammadanism is offensive to Muslims who believe that Allah, not Muhammad, founded their religion"
is a kind of monotheism
has particulars: mahdism, salafi movement, salafism, shiism, wahabism, wahhabism