biology vs biodynamics

biology and biodynamics both are nouns.

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

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

biology: the science that studies living organisms
biodynamics: the branch of biology dealing with energy or the activity of living organisms.

biology (noun)	biodynamics (noun)
the science that studies living organisms	the branch of biology dealing with energy or the activity of living organisms.
all the plant and animal life of a particular region
characteristic life processes and phenomena of living organisms