Cirrhosis is the final stage of liver disease (before death). There is only one level of cirrhosis, which is "bad", since cirrhosis is progressive and non-reverisble. The stage before cirrhosis is called "fibrosis", which you could classify is "not as bad".
Once a liver has developed cirrhosis, there is no way to reverse the damage. The only "cure" for cirrhosis is liver transplant.
The liver.
No. Cirrhosis is a degeneration of cells, leading to impaired liver function and liver damage. Where as a liver abscess is an accumulation of pus.
Yes, cirrhosis is the last stage of liver failure (after "fibrosis").
Cirrhosis and nodular cirrhosis can cause a small liver. Cirrhosis can be caused by alcohol abuse, hepatitis B and C, fatty liver disease, or something else.
The liver. Cirrhosis of the liver is often caused by excessive alcohol use.
Traffic fatalities.
Alcohol cirrhosis of the liver is scarring caused by decades of very heavy drinking.
The liver
Blood tests alone cannot "confirm" cirrhosis of the liver - final confirmation must be done by a liver biopsy. However the usual blood "indicators" of liver cirrhosis which are useful to know about (and usually all combined in a package known as "liver function blood tests") are an elevated AST and ALT (liver enzymes, which leak from hepatocytes when the cells are damaged), high bilirubin (directly correlates to how itchy you are) and high GGT, a marker for alcoholic cirrhosis.
Cirrhosis
Men with cirrhosis of the liver will often develop gynecomastia from increased production of estrogens.