When you have heard of a brand of computer, this is an example of a familiarity with the computer.
When you have lunch with an old friend and fall back into the patterns of your past, this is an example of feeling a sense of familiarity.
Cooperation that came easily because of the partners' familiarity.
I have little familiarity with that software program.
The familiarity of the buildings made us realize that we must be near the hotel.
Found the familiarity of the sales clerk offensive.