research laboratory vs research lab

research laboratory and research lab both are nouns.

Word	Noun	Adjective	Verb	Adverb
research laboratory	Yes	No	No	No
research lab	Yes	No	No	No

As nouns, research laboratory and research lab are synonyms defined as:

research laboratory and research lab: a workplace for the conduct of scientific research

Other synonyms of research laboratory include lab, laboratory, science lab, science laboratory.

research laboratory (noun)	research lab (noun)
a workplace for the conduct of scientific research	a workplace for the conduct of scientific research