International organization established in 1945 to maintain world peace and security and to promote cooperation among nations

The process of teaching and learning, especially in a school setting; the social activity of developing a person's knowledge, skills, or character.

science; scientific knowledge; a system of knowledge about the laws of nature, society, and thought

culture; civilization; the customs, beliefs, and way of life of a group or society

A group or system formed for a specific purpose, such as a company, party, or government body.