11 mths boy not waving & cant identify objects

Hi mummies. My current boy just turn 11 mths 1) still not waving. Only know how to raise his hands up when we carry him up. Super worry about the waving part because i seen so many babies able to wave by 10 mths 2) cant identify objects. E.g. have been teaching him that this toy is lion. And when test his understanding & ask him to pass me the lion, he could not do 3) no words. Only babbling mama, dada, mum mum Just curious. When does ur baby achieve these 3 milestones? Based on what i read, these 3 are 9-12mths milestones