Words likebowthat means bending the head as a greeting and a bow

Words likebowthat means bending the head as a greeting and a bowthat means the device used as shooting arrows are called（）.
A、synonyms
B、homographs
C、homophones
D、antonyms
【正确答案】：B
【题目解析】：同形异义词是拼写相同但读音和词义不同的词，题目中提到的两处bow就是这样的词。像“bow”这样的词，意思是低头打招呼；像“a bow”这样的，意思是用来射箭的装置。这种词被称为同形异义词。所以本题选B。