join vs jointure

join and jointure both are nouns.

Word	Noun	Adjective	Verb	Adverb
join	Yes	No	Yes	No
jointure	Yes	No	No	No

join (noun)	jointure (noun)
a set containing all and only the members of two or more given sets	the act of making or becoming a single unit
the shape or manner in which things come together and a connection is made	(law) an estate secured to a prospective wife as a marriage settlement in lieu of a dower

join (verb)	jointure (verb)
make contact or come together
cause to become joined or linked
become part of; become a member of a group or organization
come into the company of
be or become joined or united or linked