anosmia vs dysomia

anosmia and dysomia both are nouns.

Word	Noun	Adjective	Verb	Adverb
anosmia	Yes	No	No	No
dysomia	Yes	No	No	No

As nouns, dysomia is a hypernym of anosmia; that is, dysomia is a word with a broader meaning than anosmia:

anosmia: absence of the sense of smell (as by damage to olfactory nasal tissue or the olfactory nerve or by obstruction of the nasal passages)
dysomia: impairment of the sense of smell

anosmia (noun)	dysomia (noun)
absence of the sense of smell (as by damage to olfactory nasal tissue or the olfactory nerve or by obstruction of the nasal passages)	impairment of the sense of smell