Carbon-dioxide, nitrogen, water and oxygen are some of the examples of covalent bonds.
Examples of ionic bonds are stated below;
NaF – Sodium Fluoride
KF – Potassium Fluoride
KI – Potassium Iodide
BeO – Beryllium Oxide
Cs2O – Cesium Oxide
CaF2 – Calcium Fluoride
LiNO3 – Lithium Nitrate