public knowledge
general knowledge

The questions were either general knowledge or based on the couple's personal/public lives.

He was giving her general knowledge only, but even that could be dangerous.

These names are never mentioned and kept from general knowledge.

You just need a bit of general knowledge or some cultural awareness.

That show is one of the main reasons I have a great interest in general knowledge.

It is a learning experience for me because I have only a general knowledge of the economic and financial world.

It's general knowledge for people under 90 years of age.

"I didn't particularly want this meeting to become general knowledge."

Is a 25 percent increase in general knowledge good or bad?

I would as soon it not become general knowledge what we do.