POC stands for Person Of Colour. Its a term to describe anybody who isn't white. (Black, Asian, Indigenous, Pacific Islander, Hispanic, etc..) keep in mind that Europeans (Italians, Russians, French, etc) ARENT considered POC or WOC. The term WOC is also used along with POC, and WOC means Women Of Colour.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.