joint vs cosignatory

joint and cosignatory both are nouns.

Word	Noun	Adjective	Verb	Adverb
joint	Yes	Yes	Yes	No
cosignatory	Yes	Yes	No	No

joint (noun)	cosignatory (noun)
marijuana leaves rolled into a cigarette for smoking	one of two or more signers of the same document (as a treaty or declaration)
junction by which parts or objects are joined together
a disreputable place of entertainment
(anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion)
a piece of meat roasted or for roasting and of a size for slicing into more than one portion
the shape or manner in which things come together and a connection is made

joint (adjective)	cosignatory (adjective)
united or combined	signing jointly with others
involving both houses of a legislature
affecting or involving two or more