Coincident (adjective)

1. Happening or occuring at the same time; coinciding.
2. Being in agreement or harmony; consistent.
3. Being the same or identical; coinciding exactly in all details.

Origin:

From the latin word "coincidere" meaning "to fall together".

Examples:

1. The arrival of the guests and the start of the party were coincident.
2. His story and hers were not coincident, there were many inconsistencies.
3. The witnesses' statements were coincident with each other.
4. The timing of the two events was coincident, they happened simultaneously.
5. The readings on both instruments were coincident, indicating that the measurements were accurate.