breakdown vs biology

breakdown and biology both are nouns.

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

breakdown (noun)	biology (noun)
the act of disrupting an established order so it fails to continue	the science that studies living organisms
an analysis into mutually exclusive categories	all the plant and animal life of a particular region
a cessation of normal operation	characteristic life processes and phenomena of living organisms
(biology) the process of decay caused by bacterial or fungal action
(chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance
a mental or physical breakdown