absence vs time interval

absence and time interval both are nouns.

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

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

Other hypernyms of absence include interval.

absence (noun)	time interval (noun)
failure to be present	a definite length of time marked off by two instants
the state of being absent
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 time interval during which something or somebody is away