contrast = 对比,强调差异,而不是相似或不同之处
例句：
His white hair was in contrast with
his dark skin.
他的白头发与黑皮肤形成鲜明对比.
comparison = 比较,用于比较两人或事物（程度上）的相似或不同之处 .
例句：
Sophie's dance in comparison with others' is not good enough.
苏菲的舞蹈和别人相比还不够好.