Combinator is a pretty overloaded term, it's difficult to pin down. In practice, something like `never` would be called a combinator, though. Also, in theory a

Combinator is a pretty overloaded term, it's difficult to pin down. In practice, something like `never` would be called a combinator, though. Also, in theory a combinator is just an expression of no free variables. S-K-I calculus is the canonical set of "combinators" and all three of them could be considered "functions" but also could be considered "atoms". So perhaps it's just vague.