breathing space vs breathing time

breathing space and breathing time both are nouns.

Word	Noun	Adjective	Verb	Adverb
breathing space	Yes	No	No	No
breathing time	Yes	No	No	No

As nouns, breathing space and breathing time are synonyms defined as:

Other synonyms of breathing space include breath, breather, breathing place, breathing spell.

breathing space (noun)	breathing time (noun)
sufficient room for easy breathing or movement	a short respite
a short respite