concavity vs indenture

concavity and indenture both are nouns.

Word	Noun	Adjective	Verb	Adverb
concavity	Yes	No	No	No
indenture	Yes	No	Yes	No

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

concavity (noun)	indenture (noun)
the property possessed by a concave shape	a contract binding one party into the service of another for a specified term
a shape that curves or bends inward	formal agreement between the issuer of bonds and the bondholders as to terms of the debt
	the space left between the margin and the start of an indented line
	a concave cut into a surface or edge (as in a coastline)

concavity (verb)	indenture (verb)
	bind by or as if by indentures, as of an apprentice or servant