biology vs taxonomy

biology and taxonomy both are nouns.

Word	Noun	Adjective	Verb	Adverb
biology	Yes	No	No	No
taxonomy	Yes	No	No	No

biology (noun)	taxonomy (noun)
the science that studies living organisms	practice of classifying plants and animals according to their presumed natural relationships
all the plant and animal life of a particular region	(biology) study of the general principles of scientific classification
characteristic life processes and phenomena of living organisms	a classification of organisms into groups based on similarities of structure or origin etc