An alliance means the union between two or more entities towards a common goal, which can be between people, companies, societies or countries.
Alliance is the name of the ring used to designate the union between two people, often through marriage. This is a case where the symbol takes the name of what it symbolizes.
military alliance
The most famous alliances between countries took place in the two great world wars. In World War I, the triple alliance it was an agreement between Germany, the Austro-Hungarian Empire and Italy. In World War II, on the one hand, an alliance was made between the United States, England and France, forming the group of countriesallies. On the other hand, an alliance was formed between the Axis Countries: Germany, Italy and Japan.
Wedding ring
A wedding band is a commitment, engagement or wedding ring that is seen as a link between a couple. A wedding ring is a jewel made of metal, gold, silver, etc., adopted to represent the commitment made between two people.
financial alliance
An alliance with financial objectives can be formed between companies or countries. Strategic alliances are formed between independent companies that join know how and resources (human, financial, etc) for a common goal. The English term for this type of alliance between companies is joint venture.