The key differences are found at the usage of ordinary and Rogers PCB:
Rogers PCBs are widely used in high-frequency applications whereas ordinary PCBs cannot serve properly in high frequencies
Rogers PCBs are the least in absorbing water compared to the ordinary PCBs
Rogers PCBs can be used in harsh environmental conditions and ideal for use in aerospace and defense ,
but ordinary PCBs are more appropriate to use in low exhausting areas like standard switchboards.