Mine will crawl to my mum and say Nana x
My eldest first word was dog and he did it when looking at a picture of a dog and then out and about at dogs. That was at 10 mo
My baby says dada randomly even when he’s not here but when he comes home she’ll shout dada too xx
My eldest started fully understanding and copying words around 12-18 months My youngest (now 9 months) doesn’t say any words yet and just babbles so don’t worry