Words given on the left side of (::) are related with each other by some Logic/Rule /Relation. Select the missing word/word pair on the right side of (::) from the given alternatives based on the same Logic/Rule/Relation.

Leather : Shoes :: ?

Ore : Metal

Leather : Shoes :: ?

The logic followed here is :

As

Leather is used or making shoes

Similarly

Ore is used for making Metal