Superficialities are things that are not important or deep, like the way something looks but not what it really is.
Superficialities are usually seen as not very meaningful or significant.
Examples:
She cares too much about superficialities like clothes and makeup.
We should focus on what's inside, not on superficialities.
He spends all his time worrying about superficialities.
The argument was about superficialities, not the real problem.
In the end, superficialities don't matter at all.
She only talks about superficialities, never about important things.