On May 22, 7:31 pm, Short Wave Sportfishing wrote:

I'm interested in his response - I never quite looked at cleaners that
way before. In a sense, anything can be considered a detergent.

The term has a functional meaning, not a chemical/compositional one.
It's like "food" and carbohydrate. A food might contain carbohydrate,
might even be entirely carbohydrate. A carbohydrate might or might
not be suitable as or in food. "Food" we define by what we do with
it, "carbohydrate" by its chemical makeup.

Robert