Entrepreneur

I'd say the similarities are very close to being identical. Without writing a book here, I'd say the key to both is listening. You aren't going to get anywhere without identifying and clarifying their concerns. And then understanding explicitly those concerns.. Because in both cases, you want something from the individual. In communicating, you may want to convince them to do something, to understand something, or simply let them know that you hear them and are there to support them. The best salespeople use these exact same techniques.