biological science vs specialization

biological science and specialization both are nouns.

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

biological science (noun)	specialization (noun)
the science that studies living organisms	the special line of work you have adopted as your career
	the act of specializing; making something suitable for a special purpose
	(biology) the structural adaptation of some body part for a particular function