"soils" in the noun sense
1. dirt, filth, grime, soil, stain, grease, grunge
the state of being covered with unclean things
2. soil, dirt
the part of the earth's surface consisting of humus and disintegrated rock
3. land, ground, soil
material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use
"the land had never been plowed"
"good agricultural soil"
4. territory, soil
the geographical area under the jurisdiction of a sovereign state
"American troops were stationed on Japanese soil"
"soils" in the verb sense
1. dirty, soil, begrime, grime, colly, bemire
make soiled, filthy, or dirty
"don't soil your clothes when you play outside!"
Source: WordNet® (An amazing lexical database of English)
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