hypochondriasis vs hypochondria

hypochondriasis and hypochondria both are nouns.

Word	Noun	Adjective	Verb	Adverb
hypochondriasis	Yes	No	No	No
hypochondria	Yes	No	No	No

As nouns, hypochondriasis and hypochondria are synonyms defined as:

hypochondriasis and hypochondria: chronic and abnormal anxiety about imaginary symptoms and ailments

hypochondriasis (noun)	hypochondria (noun)
chronic and abnormal anxiety about imaginary symptoms and ailments	chronic and abnormal anxiety about imaginary symptoms and ailments