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.
nota not nowt knot note knout knotty nod nut net nit gnat nada nett node neat nite knit newt nodi knead naiad natty netty nitty noddy nutty
biota bota iota jota quota lota nota rota ta