Is chemotherapy and antibiotics the same?

Chemo and Radiation, in short actually mean CHEMOTHERAPY and RADIOTHERAPY respectively.Commonly Chemotherapy indicates the treatment of malignant diseases by using different natural or synthetic chemical compounds either by oral,topical or intravenous route.Mode of action of these agents are bit complicated but in short,they target the rapidly dividing tumor cells and destroy them sparing the normal ones.primarily the site of action is intra cellular nucleas where the chromosomes,containing DNA molecules,reside.few commonly used Chemotherapy agents are:CYCLOPHOSPHAMIDE,METHOTREXATE VINCRISTINE,VINBLASTINE,DOXORUBICIN etc.few agents areaalso used in non-malignant conditions also e.g.METHOTREXATE is also used to treat Rheumatoid Arthritis By the term Radiotherapy,generally the therapeutic appraoch by high frequency electro-magnetic waves,usually by gama-rays of any radioactive element is meant. By applying those radiation,the tumor cells are destroyed usually in malignant diseases with distant spread.Radiotherapy can be given to the patients from a machine(TELECOBALT,TELECESIUM etc),placing tiny pieces of radioactive agents in the body(BRACHYTHERAPY). In few occassions,radioactive agent are used in nonmalignant conditions as in GRAVES DISEASE where 131-iodine is used. As therapeutic practice,both the modalities are used to treat malignant condition with or without distant spread,either single or in combination when surgery shows no promise.