How do you use the term SOC

Prahjister writes: I recently started hearing the term SOC at work when referring to digital signage hardware. This has really triggered me. It took me a long time to figure out why. I finally did and to me it is like when I heard people refer to a PC as a CPU. I tried to speak to my colleagues and dissuade them from using this term in this manner with no luck. Am I wrong trying to dissuade them for this.