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.
terns ternes turns tarns trans terrenes terrines terrains terranes terreens treens tronas trains triens teariness turions trienes tureens tourneys dearness trueness durns darns tyrannous trones drains drowns trines truancy triunes durions diurons durians direness dourness taurines trainees trannies tarriness tyrannies
erns kerns wyverns ferns herns querns terns curns journos bournes arenes ernes moreens currans neurons borons mureins carns burins pereons karns arenas hyperons serenes mirins bairns pyrenes barrens horns wrens phrensy liernes sarins tarns yarns sharns churns warns turns triens treens terrenes girons purins syrens greens diurons lorans sirens corns gyrenes reruns rins pirns porns barns gyrons furans learns cairns herons burans kirns girns preens reins runs pyrans irons grins kernes boreens varnas morns burns morons durns cornus earns brins ornis brens brans rouens firns pornos careens sereins airns mourns grans marrons perrons darns ternes bourns reearns frons garrons serins sarans sorns barons terreens trans trienes tureens urns warrens shairns shorans yearns
tern terne sterna pterin eterne turn trone trona trine tranny torn terrine terrene terreen terrane terrain tarn stern uterine