- 天主教 tiānzhǔjiào CatholicismCatholicism or the Catholic Church; one of the three major branches of Christianity, led by the Pope in Rome. Also known as [[公教|公教|gong1 jiao4]], [[罗马公教|羅馬公教|luo2 ma3 gong1 jiao4]], or [[罗马教会|羅馬教會|luo2 ma3 jiao4 hui4]].
- 天主教徒 tiānzhǔjiàotú Catholica Catholic; a follower of Catholicism; member of the Catholic Church
- 天主堂 tiānzhǔtáng Catholic churchA church building used by Catholics for worship and gatherings
- 中国天主教爱国会 zhōngguótiānzhǔjiào'àiguóhuì Chinese Patriotic Catholic AssociationThe state-sanctioned organization for Catholics in mainland China, established to manage the church independently from the Vatican.
- 天主教会 tiānzhǔjiàohuì the Catholic Churchthe Catholic Church; Roman Catholicism
- 乐天主义 lètiānzhǔyì optimismthe belief that good things will happen or that a situation will be successful
