Translation guide
The Catholic doctrine that the Virgin Mary was conceived without original sin. In Japanese, this is a fixed religious term.
Immaculate Conception (Catholic doctrine)
A fixed religious term; not used in everyday conversation.
Referring to the Catholic dogma that Mary was free from original sin from the moment of her conception.
Standard Japanese term for the Immaculate Conception, used in Catholic contexts.
The Immaculate Conception refers to Mary's conception, not Jesus' virgin birth. The virgin birth is 「処女懐胎」（しょじょかいたい） in Japanese. Do not confuse the two.
The Immaculate Conception is a dogma of the Catholic Church.
A more explicit form, meaning 'the Immaculate Conception of the Blessed Virgin Mary'.
December 8th is the Feast of the Immaculate Conception of the Blessed Virgin Mary.