Over vs. Completed vs. Finished

[EngLearner]

Hi All,

Could some one explain the difference between them, if possible, with an example for each?

Thanks,
EngLearner.

[Worldtour]

Remember over can be used as a preposition of place, adverb and adjective. I would say that over and finished are the closest in meaning to each other. Completed implies the task is finished to the point of perfected. Finished does not imply the same, only that something has come to an end. In other words you could be finished but yet the task is not yet completed.

He completed the painting. He completed the pass. (Successfully carried out a task) My work here is completed.
I am finished with this nonsense. (Won't participate any longer) He finished at the top of his class. (Final position) The Bulls finished in last place in the NBA.
The concert is over. (Performance has ended)

Sometimes it is a just a matter of word collocation, which words are used together.
Any good dictionary will have more concise definitions

[Lost_Soul]

FYI, one of the meanings of to finish is to kill