No, a covalent compound is not composed of a non-metal and a metal.

Here's why:

* Covalent bonds form when two non-metals share electrons. They share the electrons because they have similar electronegativity (a measure of how strongly an atom attracts electrons).

* Ionic bonds form when a metal and a non-metal transfer electrons. The metal loses electrons to become a positively charged cation, and the non-metal gains electrons to become a negatively charged anion.

Examples of covalent compounds:

* Water (H₂O)

* Carbon dioxide (CO₂)

* Methane (CH₄)

Examples of ionic compounds:

* Sodium chloride (NaCl)

* Calcium oxide (CaO)

* Magnesium sulfide (MgS)