lebensraum vs living space

lebensraum and living space both are nouns.

Word	Noun	Adjective	Verb	Adverb
lebensraum	Yes	No	No	No
living space	Yes	No	No	No

As nouns, lebensraum and living space are synonyms defined as:

lebensraum and living space: space sought for occupation by a nation whose population is expanding

lebensraum (noun)	living space (noun)
space sought for occupation by a nation whose population is expanding	space sought for occupation by a nation whose population is expanding