lab vs research lab

lab and research lab both are nouns.

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

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

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

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

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