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.
errand errant earned aeronaut
rand grand errand brand churned corned turned rynd darned craned earned pernod learned kerned serranid yearend hydrant barned grind veranda burned jurant brant gerund brandy warned tyrant rind groaned warrant reearned trend courant sorned rant currant mourned kirned durned ranid yarned errant arrant grant rend cairned girned horned frond randy yearned