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.
naric narc narco nark narky
naric baric daric arc wrick rick lyric myrica narco auric narc barca arco hydric hayrick toric trick ureic choreic areic prick erica derrick brick marc pyric boric xeric ferric ceric heroic lorica taroc crick triac yttric uric choric
gnar gnarr knar knarry naira nairu narrow nary near nori noria snare unary