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.
linens linins loneness looniness lenience leniency
linens quinones nuns bonniness canoness coniines canniness linins sunniness nowness pinones honans phonons oneness mooniness pennons ionones guanines nannies runniness chinones tinniness puniness funniness renins boniness tenons venines fanons quinines zaniness conins downiness guenons tannins fineness looniness mannans nans nenes pinenes ninons pennines venenes inanes pinons xenons nonnews loneness cannons conines canons newness ninnies canines nones guanins venins tawniness kinins dyneins goneness doneness quinins neons tininess saneness nines rennins phoniness raininess whininess shininess