space laboratory vs space platform

space laboratory and space platform both are nouns.

Word	Noun	Adjective	Verb	Adverb
space laboratory	Yes	No	No	No
space platform	Yes	No	No	No

As nouns, space laboratory and space platform are synonyms defined as:

space laboratory and space platform: a manned artificial satellite in a fixed orbit designed for scientific research

Other synonyms of space laboratory include space station.

space laboratory (noun)	space platform (noun)
a manned artificial satellite in a fixed orbit designed for scientific research	a manned artificial satellite in a fixed orbit designed for scientific research