microbiology vs biology

microbiology and biology both are nouns.

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

As nouns, biology is a hypernym of microbiology; that is, biology is a word with a broader meaning than microbiology:

microbiology: the branch of biology that studies microorganisms and their effects on humans
biology: the science that studies living organisms

Other hypernyms of microbiology include biological science.

microbiology (noun)	biology (noun)
the branch of biology that studies microorganisms and their effects on humans	the science that studies living organisms
	all the plant and animal life of a particular region
	characteristic life processes and phenomena of living organisms