What is one similarity and one difference between a binary ionic compound and a binary molecular compound?

Answer 1

Binary means they contain 2 elements. This would be a similarity

A difference would be that a binary ionic compound contains a metal and a non metal whereas a binary molecular compound contains 2 non metals.

Answer 2

Similarity: They both consist of two atoms, hence the name binary.

Difference: One has ionic bonds, and the other has covalent bonds.