actinotherapy vs radiation therapy

actinotherapy and radiation therapy both are nouns.

Word	Noun	Adjective	Verb	Adverb
actinotherapy	Yes	No	No	No
radiation therapy	Yes	No	No	No

As nouns, actinotherapy and radiation therapy are synonyms defined as:

actinotherapy and radiation therapy: (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

Other synonyms of actinotherapy include irradiation, radiation, radiotherapy.

actinotherapy (noun)	radiation therapy (noun)
(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance	(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance