diabetes vs polygenic disorder

diabetes and polygenic disorder both are nouns.

Word	Noun	Adjective	Verb	Adverb
diabetes	Yes	No	No	No
polygenic disorder	Yes	No	No	No

As nouns, polygenic disorder is a hypernym of diabetes; that is, polygenic disorder is a word with a broader meaning than diabetes:

diabetes: a polygenic disease characterized by abnormally high glucose levels in the blood; any of several metabolic disorders marked by excessive urination and persistent thirst
polygenic disorder: an inherited disease controlled by several genes at once

Other hypernyms of diabetes include polygenic disease.

diabetes (noun)	polygenic disorder (noun)
a polygenic disease characterized by abnormally high glucose levels in the blood; any of several metabolic disorders marked by excessive urination and persistent thirst	an inherited disease controlled by several genes at once