Curietherapy vs radiotherapy

Curietherapy and radiotherapy both are nouns.

Word	Noun	Adjective	Verb	Adverb
Curietherapy	Yes	No	No	No
radiotherapy	Yes	No	No	No

As nouns, radiotherapy is a hypernym of Curietherapy; that is, radiotherapy is a word with a broader meaning than Curietherapy:

Curietherapy: the use of radium in radiation therapy
radiotherapy: (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

Other hypernyms of Curietherapy include actinotherapy, irradiation, radiation, radiation therapy.

Curietherapy (noun)	radiotherapy (noun)
the use of radium in radiation therapy	(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance