Outpaces rhymes with:
aerospace's, airspaces, cyberspace's, aerospace's, airspaces, birthplaces, bookcases, briefcases, cyberspace's, databases, interfaces, marketplace's, marketplaces, showcases, staircases, suitcases, workplaces
Outpaces sounds like:
oedipus, outback, outfox, outfoxes, outpace, outpouch