decomposition vs decompose

decomposition is a noun but decompose is not a noun.

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

decomposition (noun)	decompose (noun)
the analysis of a vector field
the organic phenomenon of rotting
(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
in a decomposed state

decomposition (verb)	decompose (verb)
	separate (substances) into constituent elements or parts
	break down
	lose a stored charge, magnetic flux, or current