regeneration vs biology

regeneration and biology both are nouns.

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

regeneration (noun)	biology (noun)
the activity of spiritual or physical renewal	the science that studies living organisms
forming again (especially with improvements or removal of defects); renewing and reconstituting	all the plant and animal life of a particular region
(biology) growth anew of lost tissue or destroyed parts or organs	characteristic life processes and phenomena of living organisms
feedback in phase with (augmenting) the input