Overbooks rhymes with:
checkbooks, cookbook's, cookbooks, guidebooks, handbooks, jokebooks, matchbooks, notebooks, passbooks, pocketbooks, schoolbooks, scrapbooks, sketchbooks, storybooks, textbooks, waldenbooks, waldenbooks', yearbooks
Overbooks sounds like:
oberbeck, overbaugh, overbeck, overbook, overpass, overpasses, overpeck, overviews