verb

• (transitive) To join together; to unite; to combine.
  "They are representatives that will loosely conjoin a nation."
• (transitive) To marry.
  "I will conjoin you in holy matrimony."
• (transitive, grammar) To join as coordinate elements, often with a coordinating conjunction, such as coordinate clauses.
• (transitive, mathematics) To combine two sets, conditions, or expressions by a logical AND; to intersect.

noun

• (grammar) One of the words or phrases that are coordinated by a conjunction.
  "Et is the general coordinator that can be used for all types of coordination, both clauses and constituents, regardless of the semantic relation between the conjoins."
• (archaeology) A reassembled bone, stone or ceramic artifact.
  "Attention must also be given to understanding why certain sites yield a low number of conjoins."