The main difference of these two is about entrepreneurs innovating the products and making it more interesting and productive and more profitable. The easiest way to understand is an image that I've seen somewhere and it goes like this;
Businessman sells one watermelon for $5.
An entrepreneur sells watermelon juice (one slice) for $5.
In summary
Both businessmen and entrepreneurs are important to the economy, but there're lots of difference between them, like in their approaches, mindsets, and definitions. Businessmen definitely focus on managing established companies and targeting success, whereas entrepreneurs pay attention to innovation and taking risks to create new ventures or transform existing ones. Recognizing these differences can shed light on the various ways individuals contribute to economic growth and progress.
I agree, both are important and they have their strengths that complement each other. Someone can be a businessman but not all businessman can become entrepreneurs.