Japan rhymes with:
chapin, dupin, lapan, lappin, chapin, cspan, dupin, harpin, lapan, lappin, maupin, pan, span, spann
Japan sounds like:
jacobean, jacobin, jacobina, jacobine, jaffna, javan, jawbone, jeepney, jobin, jobina, jobyna, josefina, josephina, josephine, jospin, jovan, jovian, jupin