In human chemistry, a secondary field particle is a coalesced or grouped particle, e.g. five photons, thirty molecules, pheromones, information, currency, emotion, such as a tone of voice contained in the vibratory patterns of a sound wave, etc., that act as effective force carriers. 
● Primary field particle
1. Thims, Libb. (2007). Human Chemistry (Volume One) (pg. 202-03). Morrisville, NC: LuLu.