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.

Ostrich : Bird :: Chair :?

Furniture

Ostrich : Bird :: Chair :?

The logic followed here is :

As we know

Ostrich is a Kind of bird

Similarly

Chair is a kind of Furniture