homophone

homophone
/ˈhɔməfəun; `hɑməˌfon/ n
word pronounced like another word but with a different meaning or spelling 同音异义词, 同音异形词（读音相同而意义或写法不同者）, 如 some, sum / sʌm; sʌm/; knew, new / nju:; nju/.

牛津英汉双解词典