Listening carefully can help you in distinguishing between these two similar words.

distinguishing 是动词 distinguish 的现在分词形式。distinguish 由前缀 dis-（表示"分开"）和词根 stinguere（拉丁语，意为"刺、戳"）组成，字面意思是"通过刺戳来分开"，引申为"区分、辨别"的意思。 distinguishing between... 表示"在...之间进行区分"的动作。