“There is an inevitable divergence between the world as it is and the world as men perceive it.” (J. William Fulbright)

Confluence means a coming or flowing together, meeting, or gathering at one point.
Divergence means a drawing apart (as of lines extending from a common center); the acquisition of dissimilar characters by related organisms in unlike environments.

“Its a combination of melody and lyrics, not one without the other. Its a confluence of these different elements that makes something powerful.” (Michael Bolton)