natural vs biological science

natural and biological science both are nouns.

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

natural (noun)	biological science (noun)
(craps) a first roll of 7 or 11 that immediately wins the stake	the science that studies living organisms
a notation cancelling a previous sharp or flat
someone regarded as certain to succeed

natural (adjective)	biological science (adjective)
(of a parent or child) related by blood; genetically related
in accordance with nature; relating to or concerning nature
existing in or produced by nature; not artificial or imitation
existing in or in conformity with nature or the observable world; neither supernatural nor magical
(of a musical note) being neither raised nor lowered by one chromatic semitone
being talented through inherited qualities
functioning or occurring in a normal way; lacking abnormalities or deficiencies
unthinking; prompted by (or as if by) instinct
free from artificiality
(used especially of commodities) being unprocessed or manufactured using only simple or minimal processes