soil vs geographic area

soil and geographic area both are nouns.

Word	Noun	Adjective	Verb	Adverb
soil	Yes	No	Yes	No
geographic area	Yes	No	No	No

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

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

soil (noun)	geographic area (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)	geographic area (verb)
make soiled, filthy, or dirty