union

nouns

an organization of employees formed to bargain with the employer
"you have to join the union in order to get a job"
is derived from
is derived from
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"
the state of being joined or united or linked
"there is strength in union"
antonym
the state of being a married couple voluntarily joined for life (or until divorce)
"a long and happy marriage"; "God bless this union"
healing process involving the growing together of the edges of a wound or the growing together of broken bones
a political unit formed from previously independent people or organizations
"the Soviet Union"
is a type of (narrower)
a unit with political responsibilities
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"
the occurrence of a uniting of separate parts
"lightning produced an unusual union of the metals"
is a type of (narrower)
an event that happens
a device on a national flag emblematic of the union of two or more sovereignties (typically in the upper inner corner)
is a type of (narrower)
an emblematic design (especially in heraldry)
"he was recognized by the device on his shield"
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"
is derived from
antonym

adjectives

of trade unions
"the union movement"; "union negotiations"; "a union-shop clause in the contract"
antonym
is similar to
requiring union membership
"a closed shop"
is similar to
being a member of or formed into a labor union
"organized labor"; "unionized workers"; "a unionized shop"