Why does a teacher use synonyms to define vocabulary?

Using synonyms to define vocabulary leverages students' existing knowledge and experiences, allowing them to make connections with words they already understand. This approach can enhance comprehension and retention of new vocabulary by linking unfamiliar terms to familiar concepts. When teachers provide synonyms, they help students grasp meanings in a context that feels relevant and accessible, facilitating deeper understanding. The other options do not align with the primary goal of enhancing vocabulary learning through the use of synonyms, which is fundamentally about building on prior knowledge and enhancing comprehension.