K and Metallic element

K noun - A light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite.

Metallic element and k are semantically related. In some cases you can use "Metallic element" instead a noun "K".

Metallic element noun - Any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc..

K and metallic element are semantically related. Sometimes you can replace term "K" with "Metallic element", this terms are similar.