lunitidal interval vs interval

lunitidal interval and interval both are nouns.

Word	Noun	Adjective	Verb	Adverb
lunitidal interval	Yes	No	No	No
interval	Yes	No	No	No

As nouns, interval is a hypernym of lunitidal interval; that is, interval is a word with a broader meaning than lunitidal interval:

lunitidal interval: interval between the moon's transit of a particular meridian and the next high tide at that meridian
interval: a definite length of time marked off by two instants

Other hypernyms of lunitidal interval include time interval.

lunitidal interval (noun)	interval (noun)
interval between the moon's transit of a particular meridian and the next high tide at that meridian	the distance between things
	a set containing all points (or all real numbers) between two given endpoints
	the difference in pitch between two notes
	a definite length of time marked off by two instants