The difference between Blacken and Soil

Blacken as a verb (transitive):

To cause to be or become black.

Blacken as a verb (intransitive):

To become black.

Blacken as a verb:

To make dirty.

Blacken as a verb:

To defame or sully.

Blacken as a verb:

To cook (meat or fish) by coating with pepper, etc., and quickly searing in a hot pan.

Soil as a noun (uncountable):

A mixture of sand and organic material, used to support plant growth.

Soil as a noun (uncountable):

The unconsolidated mineral or organic material on the immediate surface of the earth that serves as a natural medium for the growth of land plants.

Soil as a noun (uncountable):

The unconsolidated mineral or organic matter on the surface of the earth that has been subjected to and shows effects of genetic and environmental factors of: climate (including water and temperature effects), and macro- and microorganisms, conditioned by relief, acting on parent material over a period of time. A product-soil differs from the material from which it is derived in many physical, chemical, biological, and morphological properties and characteristics.

Soil as a noun:

Country or territory.

Soil as a noun:

That which soils or pollutes; a stain.

Soil as a noun:

A marshy or miry place to which a hunted boar resorts for refuge; hence, a wet place, stream, or tract of water, sought for by other game, as deer.

Soil as a noun:

Dung; compost; manure.

Soil as a verb (transitive):

To make dirty.

Soil as a verb (intransitive):

To become dirty or soiled.

Soil as a verb (transitive, figurative):

To stain or mar, as with infamy or disgrace; to tarnish; to sully.

Soil as a verb (reflexive):

To dirty one's clothing by accidentally defecating while clothed.

Soil as a verb:

To make invalid, to ruin.

Soil as a verb:

To enrich with soil or muck; to manure.

Soil as a noun (uncountable, euphemistic):

Faeces or urine etc. when found on clothes.

Soil as a noun (countable, medicine):

A bag containing soiled items.

Soil as a noun:

A wet or marshy place in which a boar or other such game seeks refuge when hunted.

Soil as a verb:

To feed, as cattle or horses, in the barn or an enclosure, with fresh grass or green food cut for them, instead of sending them out to pasture; hence (such food having the effect of purging them), to purge by feeding on green food.