watch , *****
observe ***
follow , *****
watch over
keep an eye on

Who had a better right to watch over his daughter?

You're going to have to stay here and watch over him.

A couple of men were told off to watch over them.

Can't have somebody watching over me for the rest of my life.

But not so easy if they took turns to watch over each other.

On average, American children watch over three hours of television each day.

It felt good just to watch over the two of them.

Yet he was still watching over me, for a little while longer at least.

I like having control of the book and watching over the quality.

He might have been watching over all of them for a century.