Chemotherapy is, literally, any treatment can be done with chemicals. In this sense it is not a term used only in cancer care, but includes any use of chemical drugs.
In fact, in common usage means chemotherapy for the treatment of cancer with substances that block the replication of malignant cells. Since there are over 200 different types of cancer and more than 60 categories of chemotherapeutic molecules, the following information should be considered general and should be evaluated with your doctor regarding their condition.