The RETRIEVE command retrieves data stored by expired START commands. It is the only method available for accessing such data. The RECEIVE command is used by all CICS- supported terminals for which the other RECEIVE descriptions are not appropriate.

Hi there, To retrieve something is go and get it. In a sentence, "I threw the ball and the dog will retrieve it for me". In other words, the dog will bring the ball back to me. To receive something is for someone to give it to you. So someone can send you something and when it arrives (for example a letter) you will receive it.

"retrieve" is to get something you had before, "receive" isn't.

receive = allowing somebody to give you something Example: I am happy to receive your gift retrieve= to get or to find The dog wanted to retrieve the tennis ball and give it back to his master.