dysomia vs anosmia

dysomia and anosmia both are nouns.

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

As nouns, anosmia is a hyponym of dysomia; that is, anosmia is a word with a more specific, narrower meaning than dysomia:

dysomia: impairment of the sense of smell
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)

Other hyponyms of dysomia include hyposmia.

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