What is the difference between (if any) being part of an ethnic group, being part of a pan-ethnic group, being part of a race, and having an ethnic identity?

joyce January 6, 2016

What is the difference between (if any) being part of an ethnic group, being part of a pan-ethnic group, being part of a race, and having an ethnic identity?  What are the similarities (if any) of  being part of an ethnic group, being part of a pan-ethnic group, being part of a race, and having an ethnic identity?