soil vs geographical region

soil and geographical region both are nouns.

Word	Noun	Adjective	Verb	Adverb
soil	Yes	No	Yes	No
geographical region	Yes	No	No	No

As nouns, geographical region is a hypernym of soil; that is, geographical region is a word with a broader meaning than soil:

Other hypernyms of soil include geographic area, geographic region, geographical area.

soil (noun)	geographical region (noun)
the geographical area under the jurisdiction of a sovereign state	a demarcated area of the Earth
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

soil (verb)	geographical region (verb)
make soiled, filthy, or dirty