juncture vs happening

juncture and happening both are nouns.

Word	Noun	Adjective	Verb	Adverb
juncture	Yes	No	No	No
happening	Yes	No	No	No

As nouns, happening is a hypernym of juncture; that is, happening is a word with a broader meaning than juncture:

Other hypernyms of juncture include natural event, occurrence, occurrent.

juncture (noun)	happening (noun)
an event that occurs at a critical time	an event that happens
the shape or manner in which things come together and a connection is made
a crisis situation or point in time when a critical decision must be made