The relationship here is between a body part and the primary way it communicates non-verbally. A face is used to display expressions, while a hand is used to perform gestures. Therefore, 'gesture' is the correct parallel to 'expression' in this context.

This analogy is based on the professional relationship between a worker and their primary place of employment. A chef performs their professional duties in a restaurant. Similarly, a druggist, or pharmacist, performs their professional duties in a pharmacy, making 'Pharmacy' the correct location-based counterpart in this analogy.

The relationship is defined by the primary state or condition associated with a specific location. A dungeon is a place characterized by confinement, whereas an asylum is a place characterized by providing refuge or protection to those in need.

The items stool, table, and chair are all classified under the general category of furniture. This is a classic classification analogy where the specific items share a common hypernym.

This analogy is based on the study of specific subjects. Virology is the scientific study of viruses. Similarly, semantics is the branch of linguistics and logic concerned with meaning, which is fundamentally the study of language and how meaning is constructed within it.

This analogy compares an animal to its characteristic mode of locomotion. A horse moves by galloping, while a duck is characteristically known for its waddling gait when walking on land.

The analogy is based on military rank hierarchy. A Major is a rank senior to a Lieutenant in the army. Similarly, in the Air Force, a Squadron Leader holds a rank that is senior to a Flying Officer, making this the correct corresponding rank pair.

The analogy is based on a state of lack. A person who is poor lacks money, and a person who is weak lacks strength. Therefore, 'Weak: Strength' is the correct parallel relationship.

Kerosene, petrol, and diesel are all liquid substances used primarily as energy sources for combustion engines and heating. They are collectively classified as types of fuel. This classification is based on their shared functional purpose of providing energy through chemical combustion.

This analogy is based on the relationship between an object and its primary output or characteristic. A flower is associated with the production or presence of essence (fragrance). Similarly, an oven is an appliance primarily designed to generate and contain heat. Therefore, 'Heat' is the correct term that completes the relationship by identifying the functional output of the oven.