specialisation vs biological science

specialisation and biological science both are nouns.

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

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