I have two mathematical sets that have no common elements.
In mathematical terms, these are called 'disjoint sets', and together they are called a 'partition'.
What common or well understood word or phrase could I use to explain what these are, when speaking to someone who doesn't know what a disjoint set or partition is?
Edit: I am looking for an alternative to the answer found in this question. I am looking for a reasonably common word/phrase to replace "disjoint". The other answer found in the linked question, "orthogonal", is much too obscure for my purpose.