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.
pyrola pyrrol pyrrole payroll prole parol prowl parlay parole prelaw parolee perilla purl prill parle pearl peril parral parrel puerile purlieu
pyrola variola triol drool reroll pyrrol prowl payroll parol neurula nerol morula growl corolla caroli carol roil role broil aureolae aureola areolae areola roll neroli parlay parole prole ferula pyrrole droll torula troll