synergistic

They are entangled with one another in a synergistic relationship.

Such substances have a “synergistic effect,” he said, and therefore when it comes to pinpointing the cause of the overdose, “it’s not that easy of an equation.”

This discovery points to what's known as a secondary, or synergistic, effect.

As seen on Jan. 6, and in Charlottesville, Buffalo, El Paso, Pittsburgh, and many other places across America, this mix is synergistic and highly combustible.

The observed clinical benefits stem from the synergistic effect of these two therapies.