I want to know what exactly what amenorrhoea and viral hepatitis are.?

I'm totally comfuse with them i involve their meaning to enjoy some relief.I want to know what exactly what amenorrhoea and viral hepatitis are.?
Amenorrhea: Absence or unexpected cessation of the menses.
Viral hepatitis:
1. hepatitis caused by any one of at tiniest 7 immunologically unrelated viruses: hepatitis A virus, hepatitis B virus, hepatitis C virus, hepatitis D virus, hepatitis E virus, hepatitis F virus, hepatitis G virus;
2. hepatitis cause by a viral infection, including that by Epstein-Barr virus and cytomegalovirus.
amenorrhoea is the lack of menstration
viral hepatitis is inflammation of the liver due to a virus
amennorrhoea is the nothingness of menstrual period(s)
and viral hepatitis is the disease caused by a hepatitis A, B, or C virus- it affects the liver.
amenorrhea is the famine of menstrual cycle. And viral hepatitis is any of the forms. There is hepatitis A all the instrument to G I believe. Google viral hepatitis