flood tide vs juncture

flood tide and juncture both are nouns.

Word	Noun	Adjective	Verb	Adverb
flood tide	Yes	No	No	No
juncture	Yes	No	No	No

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

flood tide: the highest point of anything conceived of as growing or developing or unfolding
juncture: an event that occurs at a critical time

Other hypernyms of flood tide include occasion.

flood tide (noun)	juncture (noun)
the occurrence of incoming water (between a low tide and the following high tide)	an event that occurs at a critical time
the highest point of anything conceived of as growing or developing or unfolding	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