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]
(..) Dialogue: Marked=..,Default,NTP,!Effect,...and his work on alchemy with his\Npartner, Nicholas Flamel'' ! Dialogue: Marked=..,Default,NTP,!Effect,l knew the name sound familiar.\Nl read it on the train that day. Dialogue: Marked=..,Default,NTP,!Effect,Follow me! (..)2001 Harry Potter and the Sorcerer's Stone