recession vs incurvature

recession and incurvature both are nouns.

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

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

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

recession (noun)	incurvature (noun)
the act of becoming more distant	a shape that curves or bends inward
the act of ceding back
the withdrawal of the clergy and choir from the chancel to the vestry at the end of a church service
a small concavity
the state of the economy declines; a widespread decline in the GDP and employment and trade lasting from six months to a year