catechism - Dictionary definition and meaning for word catechism
Catechism (Break it like CAT + MECHISM) Where CAT reminds us of CAT (the exam) and CAT(HOLIC) so Christianity funda... MECHISM reminds us of MECHANISM (Question Answer Pattern of the Exam).
catechism -> cat(holic) + techism. The technique of understanding catholism.
The "cataclysm" (major disaster or war) resulted in a "cataclasm" (disruption) of the "catechism" (instruction in Christian beliefs given in a question-and-answer format) classes.