I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
lioness lowness lions lines leones lianes lins lionize loonies lionise looneys liens lenes linns loans lunes linos loons loins lanes leanness lunies lianas linsey lens lunas lance lenis lense lawns lenos leans lanais lanose lauans launce llanos
lioness ones ness feyness gooeyness goonies koines nowness fewness phonies leones bones coneys coyness looneys lowness boonies moneys newness peones pones rawness sones donees dunness tonnes waeness woeness leanness phoneys bonnes meanness finesse phones gneiss keenness gayness gooneys hones honeys jones cones monies vainness loonies nones conies hyponeas peonies ponies wryness zones dueness tones toonies wanness shyness ons
line lion lone leone liane liney looney aline alone cline clone lin