being pro-abortion isn't the same thing as being pro-choice.
I actually understand your point. Wikipedia's page on abortion, for example, clearly states, "Pro-choice individuals often do not consider themselves 'pro-abortion'..." I can see how you would want to explain the very important difference between being "pro-abortion" in the sense that you are for abortion rights and being "pro-abortion" in the sense that you actively promote abortions as the best choice for women with unwanted pregnancies.
However, I have to say I think some of your words were a bit harsh. "Name-calling"? "So far from the truth as to be ridiculous"? "Don't try to pretend"?
Dictionary definitions of "pro-abortion":
American Heritage Dictionary: favoring or supporting legalized abortion
Dictionary.com Unabridged: pro-choice
Merriam-Webster: favoring the legalization of abortion