About 2400 varieties of snakes are known, and only a few of these are poisonous. Many regions of the earth have no poisonous snakes at all. Students who are studying in a foreign country have to spend a great deal of time learning a new language well enough to read their assignments, listen to lecture, and prepare written reports. Assault, according to legal terminology, is a physical threat accompanied by a physical act. Drawing back a fist is interpreted as assault even though the physical act brought no harm.
Battery is an actual blow that results in physical injury.
Appetite and hunger are closely related but not identical. Whereas hunger is a painful desire for food and nourishment, appetite is a desire for a particular food. Appetite is based on taste experience. One may have an appetite for a particular food even after eating a full meal. Grazing sheep sometimes strip an arid area of every bit of vegetation.