◆ to distinguish, to recognize, to recognise, to tell apart, to differentiate (both figuratively and visually)
君と君の弟を見分けるのは難しい。
It is hard to distinguish you from your brother.
善と悪を見分けるのは必ずしもやさしいことではない。
It is not always easy to distinguish good from evil.
日本人と中国人を見分けるのはいつもやさしいとは限らない。
It is not always easy to distinguish the Japanese from the Chinese.
◆ to identify (whether an object is positive or negative in some aspect), to know the difference between something of superior and inferior quality (on sight or figuratively)