what is the difference between hiv and aids

what is the difference between hiv and aids

HIV, the human immunodeficiency virus, is the virus that causes AIDS. AIDS, acquired immune deficiency syndrome, is the name given for a variety of disease manifestations caused by HIV infection.
There are four stages during the HIV infection.AIDS is an advanced HIV stage. AIDS stands for Acquired Immunodeficiency Syndrome.

AIDS is diagnosed when the immune system is weak, as shown by a CD4 count of less than 200 cells/milliliter, or by the presence of certain opportunistic infections (for example, pneumocystis carinii pneumonia, and fungal infection of the esophagus), tumors or wasting. AIDS is the condition that results from HIV after it has done significant damage to the immune system.