marriage noun (TWO PEOPLE) B1 [ C or U ] a legally accepted relationship between two people in which they live together, or the official ceremony that results in this: They had a long and happy marriage. She went to live in another state after the break-up of her marriage. She has two daughters by her first marriage.
Examples of Formal Regions. 1  States-Texas, Florida, South Carolina, etc. 2  Countries-US, Mexico, Canada, etc. 3  Cities-Austin, Dallas, Houston, etc. 4  The area of town where the wealthiest people live. 5  The Sahara Desert of Africa. 6  US city where more than 50% of the residents speak Spanish.
Formal and informal groups have structuring as the main difference though there are also many more differences that will be talked about in this article. Schools, church, hospitals, government, civic organizations etc are all examples of formal groups.