In order to answer this, we need some context. I'm assuming this is a comprehension?
When I think of the word breakdown in communication, it is a sense of making the concept you are talking about simpler. You may need to use this tactic when talking to smaller children.
sentence: Hey Mrs. Brown, could you breakdown what you just said, I don't understand.
I dont have a clue what you are asking
The New Oxford American Dictionary (NOAD) is a substantial revision of the Oxford Dictionary of English (ODE, which is a British English dictionary). ... ODE was revised for NOAD, with some spelling changes, new words found only in the US, and (rarely) some changes in the order of entries for the American market.