Every baby develops at their own pace.
My son is 10 months old also. He can say baba, mama (I swear he said it once when he wanted to nurse), and dada, but he doesn't associate them with anything; he just babbles. He pulls himself up to standing and crawling just like your son. He can't stand on his own yet. Not even for like 10 seconds. The most he's done it for is 2-3 seconds. Most of the time when I try to work with him on it, he just picks up his feet and wants nothing to do with it. He's just not ready yet. He does hit toys together and clap, and put toys into the hole in his toys- one of these-
He plays peekaboo, but does not wave bye-bye. He can't walk either, and will only walk a step or two even with us holding his hands. He has no interest in it yet.
My niece is 14.5 months, and she doesn't walk or stand on her own yet either.