alternatives — a choice limited to one of two or more possibilities, as of things, propositions, or courses of action, the selection of which precludes any other possibility: You have the alternative of riding or walking.
doubles — twice as large, heavy, strong, etc.; twofold in size, amount, number, extent, etc.: a double portion; a new house double the size of the old one.
verb alternates
changes — to make the form, nature, content, future course, etc., of (something) different from what it is or from what it would be if left alone: to change one's name; to change one's opinion; to change the course of history.
