decomposition vs biology

decomposition and biology both are nouns.

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

decomposition (noun)	biology (noun)
the analysis of a vector field	the science that studies living organisms
the organic phenomenon of rotting	all the plant and animal life of a particular region
(biology) the process of decay caused by bacterial or fungal action	characteristic life processes and phenomena of living organisms
(chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance
in a decomposed state