cretinism vs hypothyroidism

cretinism and hypothyroidism both are nouns.

Word	Noun	Adjective	Verb	Adverb
cretinism	Yes	No	No	No
hypothyroidism	Yes	No	No	No

As nouns, hypothyroidism is a hypernym of cretinism; that is, hypothyroidism is a word with a broader meaning than cretinism:

cretinism: severe hypothyroidism resulting in physical and mental stunting
hypothyroidism: an underactive thyroid gland; a glandular disorder resulting from insufficient production of thyroid hormones

cretinism (noun)	hypothyroidism (noun)
severe hypothyroidism resulting in physical and mental stunting	an underactive thyroid gland; a glandular disorder resulting from insufficient production of thyroid hormones