Profession

Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using physical laws. Today, that distinction has mostly disappeared. Professional astronomers are highly educated individuals who typically have a PhD in physics or astronomy and are employed by research institutions or universities. They spend the majority of their time working on research, although...

A biologist is a scientist devoted to and producing results in biology through the study of organism.Typically biologists study organisms and their relationship to their environment. Biologists involved in basic research attempt to discover underlying mechanisms that govern how organisms work. Biologists involved in applied research attempt to develop or improve medical, industrial or agricultural processes. There are many types of biologists. Some deal with the macroscopic world, and others...

A scientist, in the broadest sense, refers to any person that engages in a systematic activity to acquire knowledge or an individual that engages in such practice and tradition that are linked to schools of thought or philosophy. In a more restricted sense, scientist refers to individuals who use the scientific method. The person may be an expert in one or more areas of science. This article focuses on the more restricted use of the word. Historical, scientists were termed "natural...

A politician (from Greek "polis") is an individual who is involved in influencing public decision making through the influence of politics or a person who influences the way a society is governed through an understanding of political power and group dynamics. This includes people who hold decision-making positions in government, and people who seek those positions, whether by means of election, coup d'état, appointment, electoral fraud, conquest, right of inheritance (see also: divine right) or...

A physician, medical practitioner or medical doctor is a person who practices medicine and is concerned with maintaining or restoring human health through the study, diagnosis, and treatment of disease and injury. This is accomplished through a detailed knowledge of anatomy, physiology, diseases and treatment - the science of medicine - and its applied practice - the art or craft of medicine. The word physician comes from an ancient Greek noun φυσις (physis) and its derived adjective...

A singer is a person who uses his or her voice to produce music. Often the singer is accompanied by musicians and instruments. While many people sing for pleasure, vocal skill is usually a combination of innate talent and professional training. People who fit the above requirements are referred to as vocalists. A lead singer performs the primary vocals of a song, as opposed to a backing singer who sings backup vocals or harmonies. An exception is five-part gospel a cappella music, where the...

A sportsperson (British and American English) or athlete (principally American English) is any person who participates regularly in a sport. Athletes can be professional (paid) or amateur (unpaid). A superior athlete is one who has above average physical skills (strength, agility, and endurance) and is thus more suited for physical competition. An Ancient Greek word for "contest" was athlos, and those competing in early Greek games were called athletes. Most professional athletes have...

An architect is a person who is involved in the planning, design, and oversight of a building's construction. The word "architect" comes from Latin architectus, which in turn derives from Greek arkhitekton (arkhi, chief + tekton, builder"). In its broadest sense, an architect is a person who translates a user's requirements into a built environment. Architects must frequently make professional decisions that affect the safety and well being of the general public. Architects are required to...

A truck driver (Commonly called a trucker, driver or teamster in the United States and Canada, a truckie or ute driver in Australia and New Zealand and a lorry driver or driver in the United Kingdom and Ireland) is a person who earns a living as the driver of a truck, usually a semi truck, box truck, or dump truck. Truck drivers provide an essential service to industrialized societies by transporting finished goods and raw materials over land, typically from manufacturing plants to retail or...

A person who presents the news on radio or television.