Open English Wordnet
Nouns
(n)concurrence, coincidence, conjunction, co-occurrencethe temporal property of two things happening at the same time“the interval determining the coincidence gate is adjustable”
(n)conjunction, conjunctive, connective, continuativean uninflected function word that serves to conjoin words or phrases or clauses or sentences
(n)conjunctionthe grammatical relation between linguistic units (words or phrases or clauses) that are connected by a conjunction
(n)conjunction, alignment(astronomy) apparent meeting or passing of two or more celestial bodies in the same degree of the zodiac