point of view -- a way of thinking about something ;(someone 's)

               viewpoint; an attitude or expression of self-interest.

               從……的角度來看，來想。

 perspective on something--a way of looking at a situation and

               and determining what is important.

               對事情的看法及判斷，帶有審查的意味。

 意思就是說，pov 是較輕鬆的看法想法，而perspective就有嚴肅思考之意。