absence vs interval

absence and interval both are nouns.

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

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

Other hypernyms of absence include time interval.

absence (noun)	interval (noun)
failure to be present	the distance between things
the state of being absent	a set containing all points (or all real numbers) between two given endpoints
the occurrence of an abrupt, transient loss or impairment of consciousness (which is not subsequently remembered), sometimes with light twitching, fluttering eyelids, etc.; common in petit mal epilepsy	the difference in pitch between two notes
the time interval during which something or somebody is away	a definite length of time marked off by two instants