[Tippiechick]

As much as I personally detest BBS, I must say, she is indeed correct with her information. This is how it is explained to us during the NM period.

Apparantly, there were, at the time, some groups who were using sorority AND were founded as a sister organization to male fraternities. That was their main purpose. In an effort to show their independence from men, they designated themselves as a women's fraternity rather than a sorority. Women's fraternity was the original term.

Of course, perhaps they were just trying to be different from SSS at the time?

This way, they were showing that they were not a sister organization. They were showing themselves equal in some way to their male counterparts by using the term women's fraternity.

I am looking into it further.