on top of 同 above 有咩分別????

on top o f系 物件既頂部
above 系 上方
under 系 物件既下方
below 系 下方

1)
on top of something means on the highest surface of something.

above means (preposition, adverb)
i) in a higher position than something else.
ii) more than a particular number, amount, or level
iii) to a greater degree than something else

2)
under (opposite: over) means (synonym : below) (preposition)
i) at a lower level than something, or covered by something
ii) less than a particular number, amount, age, or price

below (opposite: above) means (preposition, adverb)
i) in a lower place or position, or on a lower level
ii) of a lower rank or having a less important job than someone else
iii) less than a particular number, amount, level etc
iv) lower on the same page, or on a later page