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.
alumna alumina alumnae alumin alumni alumine alimony
alumna lamina limina lumen lumina alumin alumina alumnae alumni velamina calumny column columnea hypolimnia
alum alamo alma almah alme almeh