biology vs bionomics

biology and bionomics both are nouns.

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

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

biology: the science that studies living organisms
bionomics: the branch of biology concerned with the relations between organisms and their environment

biology (noun)	bionomics (noun)
the science that studies living organisms	the branch of biology concerned with the relations between organisms and their environment
all the plant and animal life of a particular region
characteristic life processes and phenomena of living organisms