transmit the sensory impulse to the appropriate part of the brain or spinal cord for interpretation and processing; also known as association neurons.
depth. 1  the distance from the top downward, from the surface inward, or from front to back. 2  perspective, as in a painting. 3  the quality or condition of being deep; deepness; specif., 4  intensity, as of colors, silence, or emotion.
Depth of Field is by definition the distance between the Plane of Focus or the distance between the things that are in focus in that shot. Using them interchangeably is like using Meanline and X-Heigh interchangeably in graphic design - one is the thing the other is the distance to the thing but we'd understand the basic same function of them.