What Is Their Main Difference?
'On' and 'upon' indicate the same meaning. Both of them are used to indicate that something is in an elevated poisition. The only difference between the two is that 'upon' is more formal.
'On' is used to show that something is located vertically at a higher level than something else. 'On' is more common than its equivalent 'upon.'
I asked her to place her belongings
They made sure everything was showcased
When we want to show something is vertically at a higher level than something else, we can use 'upon.' 'Upon' is mostly seen in formal texts and stories and is less common than 'on.' Have a look:
'On' and 'upon' are interchangeable when they convert the meaning of 'something is at a higher level than something else.' There are other meanings that these two prepositions can show different meanings. For example 'upon' is used as 'at the time of' in sentences. In this case, we cannot replace it with 'on.' Have a look: