Silver sulfide is a chemical compound that is composed of silver and sulfur. It is also known as argentous sulfide, silver sulphide, or Ag2S. There are several synonyms for silver sulfide that are commonly used in scientific literature and discussions. Some of these include silver(I) sulfide, argentite, acanthite, and vitargite. Argentite is a mineral form of silver sulfide, while acanthite is a variety of argentite that is formed at higher temperatures. Vitargite is a rare form of silver sulfide that forms in low-temperature environments. These synonyms are all used to describe the same chemical compound, silver sulfide.