what is the difference between above and over;under and below?
Both the words above and over, are used in the sense of ‘higher than’. The main difference lies in the context they are used. The term 'over' indicates movement, whereas 'above' indicates that something is physically higher than something else.
For example, 'a chopper flew over a city' and 'a chopper is above a city' have two different meaning.
'A chopper flew over a city' indicates that the chopper flew from one side of the city to the other side whereas ‘above the city’ indicates that the chopper was in the air higher than the city.
Below and under are similar in meaning i.e. ‘lower than’. Below is preferred when one thing is not directly under another, while under is used when something is covered by what is over it.
Example:
The cat is under the bed.
The temperature is eight degrees below zero.