Classification Choose Odd Pair of Words - Expert Level

The words in all other pairs are synonyms.

In all other pairs, second is a part of the first.

In all other pairs, the two words denoted things which serve the same purpose.

In all other pairs, lack of first causes the second.

In all other pairs, first is required by the second for its functioning..

The words in all other pairs are antonyms of each other.

In all other pairs, second denotes the class to which the first belongs.

In all other pairs, second is a part of the first.

In all other pairs, second is a collective group of the first.

In all other pairs, second is the correct Indian names of the planet denoted by the first.