I think axiom should fit, but according to its official definition, an axiom is a statement that is taken to be true, and as far as I know, a word can’t make an statement by its own.
I think axiom should fit, but according to its official definition, an axiom is a statement that is taken to be true, and as far as I know, a word can’t make an statement by its own.
Fundamental is the term used to describe concepts like points in geometry. This seems like an analogous case, so I suggest it for your use here.