conjunction

(noun) the temporal property of two things happening at the same time. Synonyms: concurrence, coincidence, co-occurrence. Example: "The interval determining the coincidence gate is adjustable."

(noun) the state of being joined together. Synonyms: junction, conjugation, colligation.

(noun) an uninflected function word that serves to conjoin words or phrases or clauses or sentences. Synonyms: conjunctive, connective, continuative.

(noun) the grammatical relation between linguistic units (words or phrases or clauses) that are connected by a conjunction.

(noun) (astronomy) apparent meeting or passing of two or more celestial bodies in the same degree of the zodiac. Synonyms: alignment.

(noun) something that joins or connects. Synonyms: junction.