incurvation vs dome

incurvation and dome both are nouns.

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

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

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

incurvation (noun)	dome (noun)
the action of creating a curved shape	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