conjunction vs joint

conjunction and joint both are nouns.

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

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

Other hyponyms of conjunction include contact, tangency, barrier strip, junction barrier, splice, splicing, thermojunction.

conjunction (noun)	joint (noun)
something that joins or connects	marijuana leaves rolled into a cigarette for smoking
the temporal property of two things happening at the same time	junction by which parts or objects are joined together
an uninflected function word that serves to conjoin words or phrases or clauses or sentences	a disreputable place of entertainment
(astronomy) apparent meeting or passing of two or more celestial bodies in the same degree of the zodiac	(anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion)
the grammatical relation between linguistic units (words or phrases or clauses) that are connected by a conjunction	a piece of meat roasted or for roasting and of a size for slicing into more than one portion
the state of being joined together	the shape or manner in which things come together and a connection is made

conjunction (adjective)	joint (adjective)
	united or combined
	involving both houses of a legislature
	affecting or involving two or more