articulation vs connexion

articulation and connexion both are nouns.

Word	Noun	Adjective	Verb	Adverb
articulation	Yes	No	No	No
connexion	Yes	No	No	No

As nouns, connexion is a hypernym of articulation; that is, connexion is a word with a broader meaning than articulation:

articulation: the act of joining things in such a way that motion is possible
connexion: the act of bringing two things into contact (especially for communication)

Other hypernyms of articulation include connection, joining.

As nouns, connexion is a hypernym of articulation; that is, connexion is a word with a broader meaning than articulation:

articulation: the shape or manner in which things come together and a connection is made
connexion: a connecting shape

Other hypernyms of articulation include connection, link.

articulation (noun)	connexion (noun)
the act of joining things in such a way that motion is possible	the act of bringing two things into contact (especially for communication)
(anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion)	shifting from one form of transportation to another
the aspect of pronunciation that involves bringing articulatory organs together so as to shape the sounds of speech	an instrumentality that connects
expressing in coherent verbal form	the process of bringing ideas or events together in memory or imagination
the shape or manner in which things come together and a connection is made	a relation between things or events (as in the case of one causing the other or sharing features with it)
	a connecting shape