biology vs biogeography

biology and biogeography both are nouns.

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

As nouns, biogeography is a hyponym of biology; that is, biogeography is a word with a more specific, narrower meaning than biology:

biology: the science that studies living organisms
biogeography: dealing with the geographical distribution of animals and plants

biology (noun)	biogeography (noun)
the science that studies living organisms	dealing with the geographical distribution of animals and plants
all the plant and animal life of a particular region
characteristic life processes and phenomena of living organisms