There's an economic CONCEPT
known as a "positional good"...
The Big Bang Theory Season 3, Episode 15
is an abstract CONCEPT...
Game of Thrones Season 1, Episode 6
I didn't really understand
the CONCEPT of death, the finality of it.
Game of Thrones Season 2, Episode 9
with the CONCEPT
that time is an illusion.
The Big Bang Theory Season 12, Episode 19
You must have heard
of that CONCEPT, haven’t you, miss?
Money Heist Season 1, Episode 11