A list of countries by homicide rate is a compilation that ranks countries based on the number of homicides per 100,000 people in a given year. It provides insight into the safety and security levels in different countries. Countries with higher homicide rates are typically considered more dangerous, while those with lower rates are seen as safer places to live. It is important to note that factors such as socio-economic conditions, access to weapons, and law enforcement effectiveness can influence these rates.