[quote="Ad_Orientem, post:2, topic:332060"]
Strictly speaking, clerics / clergy are only those who have received ordination. Everyone else, religious included, are laity.
Due to other uses of the word "layman" (as opposed to professional or expert), however, "laity" is sometimes used to mean only those who are neither ordained nor religious; and by extension, or due to ignorance, non-ordained religious are called clergy.
In other religions (Buddhism, for example) the words "ordination" and "clergy" are sometimes applied to their version of religious. And in Protestantism there are "ordained" women ministers. In a pluralistic or ecumenical society, these uses sometimes influence Catholics, but they are not traditional Catholic uses of terminology.
So, nuns are properly categorized as religious which is technically a form of laity distinct from a regular person but not the same as clergy, which are ordained? Just want to clarify.