
The religious community of a nun is referred to as a "religious order" while the religious community of a sister is referred to as an "institute" or "congregation". Hence, all nuns are religious sisters, but not all religious sisters are, properly speaking, nuns.
Votes:
1909
Nun
54.2%

In the 18th century, presumably in Venice, prostitutes started using condoms, made with catgut or cow bowel.
Votes:
1615
Whore
45.8%