contaminate vs soil

contaminate is not a noun while soil is a noun.

Word	Noun	Adjective	Verb	Adverb
contaminate	No	No	Yes	No
soil	Yes	No	Yes	No

As verbs, soil is a hypernym of contaminate; that is, soil is a word with a broader meaning than contaminate:

Other hypernyms of contaminate include begrime, bemire, colly, dirty, grime.

contaminate (noun)	soil (noun)
	the geographical area under the jurisdiction of a sovereign state
	material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use)
	anything regarded as making something unclean
	the part of the earth's surface consisting of humus and disintegrated rock

contaminate (verb)	soil (verb)
make impure	make soiled, filthy, or dirty
make radioactive by adding radioactive material