genetics vs biology

genetics and biology both are nouns.

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

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

genetics: the branch of biology that studies heredity and variation in organisms
biology: the science that studies living organisms

Other hypernyms of genetics include biological science.

genetics (noun)	biology (noun)
the branch of biology that studies heredity and variation in organisms	the science that studies living organisms
	all the plant and animal life of a particular region
	characteristic life processes and phenomena of living organisms