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.
annulus annuls annuals annulose annals anneals anils anlas annualize aneles anoles analyse awnless anlace analyze
annulus nulls annuals annuls veinules venules venulous cannulas canulas lunules manuals pinnules ranulas zonulas zonules
annul annuli annal annual annually