Answer:
The difference is size
Step-by-step explanation:
"Macroeconomics (from the Greek prefix makro- meaning "large" + economics) is a branch of economics dealing with the performance, structure, behavior, and decision-making of an economy as a whole".
"Micro- (Greek letter μ or legacy micro symbol µ is a unit prefix in the metric system denoting a factor of 10 −6 (one millionth)".
Hope this helped you!