Can a bipolar or schizophrenia person be verbal ? V2?

I MADE A MISTAKE IN THE LAST QUSTIN I DIDIN'T MEAN AUTISM: My friend is asking this he is 16 getting under a diagnoses and is really looking like he has bipoalr and or schizophrenia but many say he's to verbal talks clear about him self and whats wrong with him casue hes so alone he figured him self out and can speak him self really well i don't know much about Bipolar and or schizophrenia i can't find this online so i ask for someone's help!