Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange


A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

× 109
An organized, armed, and often a prolonged conflict that is carried on between states, nations, or other parties.
× 107
a range of characteristics used to distinguish between males and females, particularly in the cases of men and women and the masculine and feminine attributes assigned to them.
× 107
a programmable machine designed to automatically carry out a sequence of arithmetic or logical operations.
× 99
Term has many and varied definitions depending on context, but is generally accepted as the period in life between birth and puberty, although this can be argued. Can also refer to offspring at any s…
× 98
the branch of science concerned with the forces that occur between electrically charged particles. Use this tag for anything related to electricity, electrical or magnetic fiel…
× 95
Intelligence has been defined in many different ways such as in terms of one's capacity for logic, abstract thought, understanding, self-awareness, communication, learning, emotional knowledge, memory…
× 94
The scientific study of society.
× 93
An organization authorized by its greater society to use lethal force, usually including use of weapons, in defending its country by combating actual or perceived threats.
× 91
Questions about a tubular weapon or other device designed to discharge projectiles or other material.
× 91
for questions about the use or properties of "recreational" drugs such as marijuana, heroin, cocaine or LSD.
× 90
All forms of competitive physical activity which, through casual or organized participation, aim to use, maintain or improve physical fitness and provide entertainment to participants.
× 89
The forcing of undesired sexual behavior by one person upon another.
× 89
Typically pertains to the study of aircraft. Can relate to the theories, design, construction, behavior and use of such craft.
× 86
A device that can make and receive telephone calls over a radio link whilst moving around a wide geographic area.
× 85
for claims which apply to the country of Russia or the Commonwealth of Independent States.
× 84
A process in which energetic particles or energetic waves travel through a medium or space.
× 83
The set of practices perceived by a community to be associated with the preservation of health and healthy living.
× 82
Commonly used term which refers to ethanol-containing alcoholic beverages. However, more broadly, the term can also be applied to any organic compound with a hydroxyl functional group bound to a carb…
× 81
for questions regarding "government" as a concept. DO NOT USE in lieu of "United States".
× 81
for questions about the country of India.
× 77
the process of change in all forms of life over generations, and evolutionary biology is the study of how evolution occurs. The biodiversity of life evolves by means of mutations, genetic…
× 76
The specifically human capacity for acquiring and using complex systems of communication.
× 75
The action of coming to live permanently in a foreign country.
× 72
Questions about security; as it applies to any vulnerable and valuable asset, such as a person, dwelling, community, nation, or organization.
× 71
Science dealing with the study of space and celestial bodies. Can pertain to the composition, origin, motion, behavior or physical aspects of bodies in space as well as the practical applications of …
× 70
for questions about terrorism or terrorist groups. Questions regarding recent news might be unanswerable.
× 69
Questions about the State of Japan; geographical location, political philosophies, historical significance, religious beliefs, ethnic diversity, and etc.
× 68
the branch of medicine that deals with the anatomy, physiology and diseases of the eye.
× 68
for medical drugs, medications, pharmaceuticals etc. Please do not use the tag [drugs].
× 67
The science comprising the study of solid Earth, the rocks of which it is composed, and the processes by which it evolves.
× 66
The ability a physical system has to do work on other physical systems.
× 64
The science of genes, heredity, and variation in living organisms.
× 64
Populous eastern Asian nation which has undergone a myriad of changes over the years, but remains one of the oldest civilizations in the world.
× 64
For questions about claims based in Europe, or limited to Europe.
× 62
Any system by which some members of society act in an organized manner to promote adherence to the law by discovering and punishing persons who violate the rules and norms governing that society.
× 61
for questions about the health of people on a community or population level. Do not use this tag for questions about the health of individuals or biological mechanisms.