Verbal Classification

All except Stain are terms related to cleaning.

Piano is the only musical instrument in the group.

In all other pairs, first is the name of the scientist who discovered the second.

All except Thalamus are hormone-secreting glands.

All except Cool denote uncomfortable weather conditions.

All except Sharpener are used for writing.

All except Potato are fruits, while potato is a vegetable.

All except Grasslands are types of grasslands.

All except Vijayawada are capitals of states of India.

All except Eagle are flightless birds.