spring break vs time out

spring break and time out both are nouns.

Word	Noun	Adjective	Verb	Adverb
spring break	Yes	No	No	No
time out	Yes	No	No	No

As nouns, time out is a hypernym of spring break; that is, time out is a word with a broader meaning than spring break:

Other hypernyms of spring break include break, recess, respite.

spring break (noun)	time out (noun)
a week or more of recess during the spring term at school	a pause from doing something (as work)