As a noun silicon

is silicone.

As an adjective nonsilicon is

not of or pertaining to silicon.

As adjectives the difference between platinum and nonplatinum

is that platinum is of a whitish grey colour, like that of the metal while nonplatinum is not of or pertaining to platinum.

As a noun platinum

is the metallic chemical element with atomic number 78 and symbol pt.

As a proper noun phosphorus

is a name sometimes used for hesperus, the personification in greek mythology of the planet venus.

As an adjective nonphosphorus is

not of or pertaining to phosphorus.

As a proper noun silver

is for a silversmith or a rich man, or for someone having silvery gray hair or living by a silvery brook.

As an adjective nonsilver is

not of or pertaining to silver.

As a noun radon

is radon.

As an adjective nonradon is

not of or pertaining to radon.

As a noun radium

is radium.

As an adjective nonradium is

not of or pertaining to radium.

As a verb radio

is .

As an adjective nonradio is

not of or pertaining to radio technology or broadcasts.

As a noun potassium

is a soft, waxy, silvery reactive metal that is never found unbound in nature; an element (symbol'' k) with an atomic number of 19 and atomic weight of 390983 the symbol is derived from the latin ''kalium .

As an adjective nonpotassium is

not of or pertaining to potassium.

As adjectives the difference between silk and nonsilk

is that silk is made of while nonsilk is not silk.

As a noun silk

is (uncountable) a fine fiber excreted by the silkworm or other arthropod (such as a spider).

As a verb silk

is to remove the silk from (corn).

As a noun sodium

is a soft, waxy, silvery reactive metal that is never found unbound in nature, and a chemical element (symbol na) with an atomic number of 11 and atomic weight of 2298977.

As an adjective nonsodium is

not of or pertaining to sodium.