Fake is a
definition for a person who pretends to be something they aren't. Think of a person who acts with the "rainbows and sunshine"
personality or "plastic" They'll follow what's "in" instead of being themselves. Example of actions that are fake would be smiling when you aren't actually happy hence in the terms "fake it til you make it." Essentially they're pretending to be till everyone believes it to be.
The opposite terminology would be "real" Real means to be authentic Voicing your own opinion instead of following the crowd is more "real" Example everyone else is wearing red but I like monochrome colors hence I'll wear monochrome.
Examples of culture: The goth culture initially was suppose to be in representation of being different and not fake. Wearing black didn't truly matter but it represented being different then everyone
running around with color. To not conform The ideologies was initially to be different from the rest. An outsider. Authentic.
Unique. Yourself.