The distinction will be lost on (if not deliberatedly obfuscated by) many.
Glad you mentioned that. The PCA believes Marriage is between one man and one woman under God (Only). That Elders and Ministers are to be Male. That Life begins at conception and that the Bible is the complete (Plenary), Authoritative and inerrant (in the original writings).
We split off the mainline Presbyterian church over the issue of giving Tithe money to communist rebels in Central and South America in 1973. But the biggest problem was denying the authority and inerrancy of Scripture. This and other problems.
I was in the PC-USA church for a couple of years until the minster ran off with the church secretary. The church wanted him back and ran off the wife!
At the same time, I was moving to Rockville Maryland and discovered Shady Grove PCA church. It was there that several elders patiently explained the five points of Calvinism, the absolute Sovereignty of God, and our foundation in the Westminster Catechisms.
It is a complete breath of fresh air in comparison to the Political Correctness in the PC-USA. The women enjoy their distinctive roles in the Women of Faith movement and they are free from gender confusions prevalent in the Liberal churches.
We are not having the homosexual issues having long ago marriage and pro-life planks solidly in the Book of Church Order.
If you are tired of the Political Correctness or otherwise, you are invited to join us at a PCA (Presbyterian Church in America) congregation: http://www.pcanet.org/
The distinction:
PCA = conservative
PC-USA = liberal
YEP