Sex trafficking
There are a number of misconceptions about sex trafficking. Sex trafficking and human trafficking are not to be confused with human smuggling. Human trafficking for sexual or other labor may involve transporting victims across international borders, but to meet the definition of trafficking, there needs only to be exploitation of an individual after they have been coerced or deceived, so it does not necessarily involve transportation across national borders. Human trafficking and sex trafficking are often used as synonyms. However, trafficking for non-sexual exploitation may be even more prevalent than trafficking for sexual exploitation, though accurate estimates of trafficking rates are extremely difficult to obtain. Sex trafficking tends to receive more attention from aid organizations and donors due to the greater public outrage that forced sexual labor evokes compared to forced non-sexual labor and thus incidents of sex trafficking are more frequently reported.
Prostitution
Sex trafficking is defined as using coercion or force to transport an unwilling person into prostitution or other sexual exploitation. The United Nations stated in 2009 that sex trafficking is the most commonly identified form of human trafficking and estimates that about 79% of human trafficking reported is for prostitution (although the study notes that this may be the result of statistical bias and that sex trafficking tends to receive the most attention and be the most visible). Sex trafficking has been described by Kul Gautum, Deputy Executive Director of UNICEF, as "the largest slave trade in history." It is also the fastest growing criminal industry, predicted to outgrow drug trafficking. While there may be a higher number of people involved in slavery today than at any time in history, the proportion of the population is probably the smallest in history.