http://www.fcm.co.jp/firstclass/solution/index_e.html
http://mainichi.jp/contents/edu/01-jirei01.html

in‧sti‧tu‧tion [UK] [US] noun
[countable] a large organization that has a particular kind of work or purpose
financial/educational/research etc institution
the government and other political institutions
powerful institutions such as world banks
the Institution of Electrical Engineers
[countable] an important system of organization in society that has existed for a long time:
social institutions such as the family and religion
the institution of marriage/monarchy etc
The scandal threatened to undermine the institution of the presidency.
[countable] a building that people are sent to when they need to be looked after, for example old people or children with no parents – often used to show disapproval:
I was determined not to put my mother in an institution.
a mental institution (=for the mentally ill)
[uncountable] when something is started or introduced, especially something relating to the law or politics
institution of
the institution of divorce proceedings
be an institution if a person, place, event etc is an institution, they have been an important part of a place for a very long time – often used humorously:
The British pub isn’t just somewhere to drink – it’s an institution.
THESAURUS
organization
a group of people, companies, or countries, which is set up for a particular purpose: Greenpeace is an international organization that protects the environment. | the World Health Organization
institution
a large important organization such as a bank, church, or university: The University is an important academic institution. | financial institutions such as banks
association
an organization for people in a particular profession, sport, or activity, which officially represents its members – often used in names: I met a representative of the National Association of Teachers. | the Football Association
party
an organization of people with the same political aims which you can vote for in elections: Which political party do you support? | He voted for the Republican Party’s candidate.
body an important group of people who make the rules and advise people about what should be allowed: the sport’s governing body | The government has set up an advisory body.
club/society
an organization for people who share an interest, for example a sport: We belong to a tennis club. | I joined the university film society.
union
an organization formed by workers in order to protect their rights: The union ordered its members out on strike.
charity
an organization which collects money to help people who are poor, sick etc and does not make any profit for itself: She has raised a lot of money for local charities.
quango
British English disapproving an organization set up by the government, which has official power but whose members have not been elected: the amount of money that is wasted on government quangos

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