He looked 'familiar' [=he looked like someone I had seen before] but I couldn't remember his name.
Locals refer to the Maple Leaf restaurant 'familiarly' [='informally'] as ‘The Leaf.’
We are 'familiar with' the situation. [=we know about the situation]
(..) There is a methodology to what I do. There is a reason why it works. Coke and IBM have been doing this for years, all right. Are you familiar with them? Now just like anything else, you know, it's gonna take a few months of sort of transition and then everybody is gonna settle in. (..)2009 Up in the Air