denominational diversity(Nearly all the population nominate themselves as Christian, but PNG has great denominational diversity and also hosts Indigenous religions, Bah'ais and Muslims.aldrignedigen)
sectarianism(а political system in which power is shared among religious sects based on a constitutional formula distributing public offices among these sects: In Lebanese sectarianism, one half of the members of parliament are Christians and the other half are Muslims. – Особенностью конституционной системы Ливана является конфессиональный принцип, в соответствии с которым при назначениях на высшие государственные посты соблюдается определённый баланс между представителями различных религиозных общин.4uzhoj)
ethno-confessional(We can picture Yeats dutifully listening to the veteran Fenian waxing lyrical about Tone and Emmet’s endeavour to bridge the ethno-confessional gulf between Catholics and Protestants – by Ulick FitzhughTamerlane)