space platform vs space laboratory

space platform and space laboratory both are nouns.

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

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

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

Other synonyms of space platform include space station.

space platform (noun)	space laboratory (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