boy talk Vs girl talk

My elder brother has a daughter, she started speaking well from the age of 1. My son is 2 now and I can't make sense of half of what he says. The conversations are great though. I love it because, I am just listening to his stories, for I can't react or respond but just keep nodding and prodding him to continue. This I guess is the best part of raising children. I hope I can get to understand what he is trying to say before he starts understanding what I say.