How n-type semiconductor differ from p-type semiconductor ?

A n-type semiconductor is:

What is n-type semiconductor ?

Distinguish between an intrinsic semiconductor and p-type semiconductor. Give reason, why a p-type semiconductor crystal is electrically neutral, although n_h>>n_e ?

Define semiconductor?

What are extrinsic semiconductors? Describe p-type semiconductor?

What is extrinsic semiconductor? Describe N-type semiconductor.