Question

what does 'nife' means

Answer 1

the earth's core, thought to be composed of nickel and iron. Word Origin. C20: from the chemical symbols Ni (nickel) and Fe (iron) Examples from the Web for nife.

Answer 2

Answer:

The earth’s core is thought to be composed of nickel and iron. The chemical representation of nickel is Ni and iron is (Fe). So the combination of both Ni and Fe is nife.  

Explanation:

These two elements nickel and iron are founded from deep earth. Nickel resists the corrosion and nickel is used to make alloys such as stainless steel.

The use of Iron is to 'manufacture steel' and it is used in 'civil engineering' like concrete, girders, etc.