Sulfide is a compound composed of sulfur and another element or group of elements. The element or group of elements that combine with sulfur to form sulfide can be a metal, a non-metal, or even another compound. Some examples of sulfides include:

- Sodium sulfide (Na2S): Composed of sodium and sulfur.

- Iron sulfide (FeS): Composed of iron and sulfur.

- Hydrogen sulfide (H2S): Composed of hydrogen and sulfur.

- Carbon disulfide (CS2): Composed of carbon and sulfur.

- Calcium sulfide (CaS): Composed of calcium and sulfur.

The properties and uses of sulfides vary depending on the specific element or group of elements that they are composed of. For example, sodium sulfide is a water-soluble compound that is used in the production of paper, glass, and textiles. Iron sulfide is a semiconductor material that is used in the production of electronic devices. Hydrogen sulfide is a toxic gas that is produced by the decomposition of organic matter. Carbon disulfide is a flammable liquid that is used as a solvent. Calcium sulfide is a phosphor material that is used in the production of fluorescent lights.