science laboratory vs science lab

science laboratory and science lab both are nouns.

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

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

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

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

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