interim vs interval

interim and interval both are nouns.

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

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

Other hypernyms of interim include time interval.

interim (noun)	interval (noun)
the time between one event, process, or period and another	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

interim (adjective)	interval (adjective)
serving during an intermediate interval of time