Guild vs. Union: What's the Difference?

Guild and Union Definitions
Guild
An association of persons of the same trade or pursuits, formed to protect mutual interests and maintain standards.
Union
The act of uniting or the state of being united.
Guild
A similar association, as of merchants or artisans, in medieval times.
Union
A combination so formed, especially an alliance or confederation of people, parties, or political entities for mutual interest or benefit.
Guild
(Ecology) A group of species in a community that use similar environmental resources in a similar way, such as a group of songbirds that all glean insects from leaves.
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Union
(Mathematics) A set, every member of which is an element of one or another of two or more given sets.
Guild
A group or association mainly of tradespeople made up of merchants, craftspeople, or artisans for mutual aid, particularly in the Middle Ages.
Union
Agreement or harmony resulting from the uniting of individuals; concord.
Guild
A corporation.
Union
The state of matrimony; marriage
"The element that was to make possible such a union was trust in each other's love" (Kate Chopin).
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Guild
(ecology) A group of diverse species that share common characteristics or habits.
Union
Sexual intercourse.
Guild
(video games) An organized group of players who regularly play together in a multiplayer game.
Union
A combination of parishes for joint administration of relief for the poor in Great Britain.
Guild
An association of men belonging to the same class, or engaged in kindred pursuits, formed for mutual aid and protection; a business fraternity or corporation; as, the Stationers' Guild; the Ironmongers' Guild. They were originally licensed by the government, and endowed with special privileges and authority.
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Union
A workhouse maintained by such a union.
Guild
A guildhall.
Union
A labor union.
Guild
A religious association or society, organized for charitable purposes or for assistance in parish work.
Union
A coupling device for connecting parts, such as pipes or rods.
Guild
A formal association of people with similar interests;
He joined a golf club
They formed a small lunch society
Men from the fraternal order will staff the soup kitchen today
Union
A device on a flag or ensign, occupying the upper inner corner or the entire field, that signifies the union of two or more sovereignties.
Union
An organization at a college or university that provides facilities for recreation; a student union.
Union
A building housing such facilities.
Union
Union The United States of America regarded as a national unit, especially during the Civil War.
Union
Union Of, relating to, or loyal to the United States of America during the Civil War
A Union soldier.
Union
Of or relating to a labor union or labor union organizing
The union movement.
Union negotiations.
Union
(countable) The act of uniting or joining two or more things into one.
Union
(countable) The state of being united or joined; a state of unity or harmony.
Union
(countable) That which is united, or made one; something formed by a combination or coalition of parts or members; a confederation; a consolidated body; a league.
Union
(countable) A trade union; a workers' union.
Union
(countable) An association of students at a university for social and/or political purposes; also in some cases a debating body.
Union
(countable) A joint or other connection uniting parts of machinery, such as pipes.
Union
The set containing all of the elements of two or more sets.
Union
(countable) The act or state of marriage.
Union
Sexual intercourse.
Union
A data structure that can store any of various types of item, but only one at a time.
Union
A large, high-quality pearl.
Union
(historical) An affiliation of several parishes for joint support and management of their poor; also the jointly-owned workhouse.
Union
To combine sets using the union operation.
Union
Belonging to, represented by, or otherwise pertaining to a labour union.
Actors have to be union to get work here.
Union
The act of uniting or joining two or more things into one, or the state of being united or joined; junction; coalition; combination.
Union
Agreement and conjunction of mind, spirit, will, affections, or the like; harmony; concord.
Union
That which is united, or made one; something formed by a combination or coalition of parts or members; a confederation; a consolidated body; a league; as, the weavers have formed a union; trades unions have become very numerous; the United States of America are often called the Union.
Union
A textile fabric composed of two or more materials, as cotton, silk, wool, etc., woven together.
Union
A large, fine pearl.
If they [pearls] be white, great, round, smooth, and weighty . . . our dainties and delicates here at Rome . . . call them unions, as a man would say "singular," and by themselves alone.
In the cup an union shall he throw,Richer than that which four successive kingsIn Denmark's crown have worn.
Union
A device emblematic of union, used on a national flag or ensign, sometimes, as in the military standard of Great Britain, covering the whole field; sometimes, as in the flag of the United States, and the English naval and marine flag, occupying the upper inner corner, the rest of the flag being called the fly. Also, a flag having such a device; especially, the flag of Great Britain.
Union
A joint or other connection uniting parts of machinery, or the like, as the elastic pipe of a tender connecting it with the feed pipe of a locomotive engine; especially, a pipe fitting for connecting pipes, or pipes and fittings, in such a way as to facilitate disconnection.
Union
A cask suspended on trunnions, in which fermentation is carried on.
One kingdom, joy, and union without end.
[Man] is to . . . begetLike of his like, his image multiplied.In unity defective; which requiresCollateral love, and dearest amity.
Union
An organization of employees formed to bargain with the employer;
You have to join the union in order to get a job
Union
The United States (especially the northern states during the American Civil War);
He has visited every state in the Union
Lee hoped to detach Maryland from the Union
The North's superior resources turned the scale
Union
The act of pairing a male and female for reproductive purposes;
The casual couplings of adolescents
The mating of some species occurs only in the spring
Union
The state of being joined or united or linked;
There is strength in union
Union
The state of being a married couple voluntarily joined for life (or until divorce);
A long and happy marriage
God bless this union
Union
Healing process involving the growing together of the edges of a wound or the growing together of broken bones
Union
A political unit formed from previously independent people or organizations;
The Soviet Union
Union
A set containing all and only the members of two or more given sets;
Let C be the union of the sets A and B
Union
The occurrence of a uniting of separate parts;
Lightning produced an unusual union of the metals
Union
A device on a national flag emblematic of the union of two or more sovereignties (typically in the upper inner corner)
Union
The act of making or becoming a single unit;
The union of opposing factions
He looked forward to the unification of his family for the holidays
Union
Being of or having to do with the northern United States and those loyal to the Union during the Civil War;
Union soldiers
Federal forces
A Federal infantryman
Union
Of trade unions;
The union movement
Union negotiations
A union-shop clause in the contract