Nanosilver consists of silver particles that have very small sizes, usually ranging from 1 to 100 nanometers. Nanosilver differs from regular silver in its characteristics, such as more surface area and reactivity, which make it beneficial for many purposes in different domains, such as medicine, environment, and industry. This article gives a comprehensive overview of the characteristics, production, uses, risks, and environmental effects of nanosilver. It explains the physical and chemical characteristics of nanosilver, including its pros and cons compared to normal silver. It also describes various ways of producing nanosilver, and factors that influence its production. It shows the various uses of nanosilver, including its role as an antibacterial agent in healthcare, clothing, and food storage; a catalyst in organic chemistry and water treatment; and in electronic and optical uses such as detectors and screens. It also looks at the risks and environmental effects of nanosilver, including the ways of toxicity and the impacts on water animals and soil bacteria. It talks about the current rules and standards for the use of nanosilver. It also discusses future directions and challenges in the development and use of nanosilver, including new uses, challenges in size, safety, and price, and possible solutions to these challenges. This article gives a complete understanding of the characteristics, uses, and challenges related to nanosilver, and emphasizes the need for more research and development to ensure its safe and effective use.