To follow up on yesterday's post on types of logos, there is one particular "combination" logo that is very common.

It is called a "signature".

It consists of a graphical element plus an adjacent wordmark (name of the company or product in a standardized font, color, etc.).

The CBS eye plus "CBS" would be an example. Here's another.

As I said, very common, to a point where sometimes people think that is what is meant by a logo. It is very useful, but not always the best in any given situation.