activator vs biological science

activator and biological science both are nouns.

Word	Noun	Adjective	Verb	Adverb
activator	Yes	No	No	No
biological science	Yes	No	No	No

activator (noun)	biological science (noun)
(biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription	the science that studies living organisms