Words matter. They speak volumes about issues. So when individuals or groups try to change the words associated with a heated political issue, take note and take care.

The folks at National Public Radio understand the power of words. Managing Editor David Sweeney announced yesterday that the station would no longer refer to people in the abortion debate as "pro-choice" and "pro-life." Instead, the station will say "abortion rights advocates" and "abortion rights opponents," according to a memo circulated to NPR staff.

In making this change, NPR is shifting the terms of the debate to make it more friendly to the pro-choice position.