The word do conveys a number of meanings, but it means different

The word do conveys a number of meanings, but it means differently in“do one's teeth”and“do science at school”. This example shows that _____ context will determine exactly what a word means.
【正确答案】：lexical
【题目解析】：从已给信息判断，这句话谈论的是context （背景或者上下文）的作用，所给两个例子中do跟不同的词搭配，有不一样的搭配意义。