rely on 

count on 

I rely on my alarm clock to wake me up in the morning. 

She relies on her husband to take care of the children while she's at work. 

We rely on the bus to get us to school every day. 

Shecan count up to 10 in Italian.

Whenshe was 3, she could count up to 100 (count from 1 to 100)

I'm counting on you to be there for me when I need you.

Rely-> reliable 

I always go to John for advice because he's a reliable source of information.

credible

The witness was found to be credible by the jury.   

Incredible

It's incredible that he managed to run a marathon with a broken ankle.