Conjunction (noun)

1. A word used to connect clauses or sentences or to coordinate words in the same clause (e.g. and, but, or).
2. An event or circumstance that happens at the same time as or in connection with another.

Origin:

Late middle english: via old french from latin conjunctio(n-), from con- 'together' + jungere 'to join'.

Examples:

1. The conjunction 'and' is used to join two independent clauses.
2. The conjunction of the two events was highly coincidental.
3. The conjunction of the planets in the night sky was a sight to behold.
4. The conjunction of their talents led to a successful project.
5. The conjunction of their ideas resulted in a new approach to the problem.