dome vs incurvature

dome and incurvature both are nouns.

Word	Noun	Adjective	Verb	Adverb
dome	Yes	No	No	No
incurvature	Yes	No	No	No

As nouns, incurvature is a hypernym of dome; that is, incurvature is a word with a broader meaning than dome:

dome: a concave shape whose distinguishing characteristic is that the concavity faces downward
incurvature: a shape that curves or bends inward

Other hypernyms of dome include concave shape, concavity, incurvation.

dome (noun)	incurvature (noun)
a hemispherical roof	a shape that curves or bends inward
a stadium that has a roof
informal terms for a human head
a concave shape whose distinguishing characteristic is that the concavity faces downward