bipolar is a biological illness with moderate to severe mood swings often pasted down by your parents, grandparents, aunts and uncles. If the person with bipolar disorder is open to treatment it is easily treated with relativity high success rate.
sociopath has nothing to do with bipolar disorder is a psychological illness. The person has an inability to care for someone feelings other than them self. This illness is very difficult to treat. DO NOT TRUST your intuition around a sociopath they are most likely smarter than you are and skilled at self deception.