A sport is a physical activity carried out under an agreed set of rules, with a recreational purpose: for competition or self-enjoyment or a combination of these. A game is a recreational activity involving one or more players, defined by a goal that the players try to reach, and some set of rules to play it
games
Games are played primarily for entertainment or enjoyment. The difference of purpose differentiates sport from game, combined with the notion of individual (or team) skill or prowess.
Mechanical barriers — which include the skin , mucous membranes , and fluids such as tears and urine — physically block pathogens from entering the body. Chemical barriers — such as enzymes in sweat , saliva , and semen — kill pathogens on body surfaces.
