term:

Concurrent

concurrent adj

1 : occurring, arising, or operating at the same time often in relationship, conjunction, association, or cooperation [the power of taxation in the general and state governments is acknowledged to be "McCulloch v. Maryland, 17 U.S. 316 (1819)"] [a tortious act] see also concurrent cause at cause concurrent sentence at sentence
2 : insuring the same property to the same extent under identical terms [ fire policies]
3 : exercised over the same matter or area by two different authorities see also concurrent jurisdiction at jurisdiction concurrent power at power
con·cur·rent·ly adv

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.