PCB and PCBA are related to each other in electronics. Without PCB (Printed Circuit Board) there cannot be PCBA (Printed Circuit Board Assembly).
PCB for SMT or Printed Circuit Board (PCB) for Surface Mount Technology (SMT) must consider factors like CTE, cost, dielectric properties and Tg.
Printed Circuit Board Design or printed circuit board (PCB) or printed wiring board (PWB), is a board made out of non-insulating and highly heat-resistant insulating material such as fiberglass.
Printed circuit board assembly, also known as PCBA, is the process of soldering or assembly of electronic components to a PCB or printed circuit board.