Nomenclature = a system of naming in a particular specialist field

Nickname = a familiar or humorous name given to a person or thing

Pseudonym = a fictitious/adopted name, especially one used by an author

Thus, option D is the correct answer.

Illegitimate = not authorized by the law; not in accordance with accepted standards or rules

Illicit = forbidden by law, rules, or custom

Illegible = (of writing or print) impossible or very hard to read

Illusive = deceptive, unreal

So, the correct word is "illegible".

Glutton = a person who eats and drinks excessively or voraciously

Obese = very fat or overweight

Greedy = having an excessive desire or appetite for food or wealth

Mutiny = an open rebellion against the proper authorities, especially by soldiers or sailors against their officers

Coup = a sudden, violent, and illegal seizure of power from a government

Revolution = a successful attempt by a large group of people to change the political system of their country by force

Dissidence = protest against official policy

So, the correct word is "mutiny".

Cavalry = soldiers who fight on horseback

Infantry = soldiers marching or fighting on foot

Artillery = very large guns that are moved on wheels or metal tracks

Armored = a metallic sheathing or protective covering

So, the correct word is "cavalry".

Legend = a very old and popular story that may be true

Anecdote = a short story based on one's personal experience

Fable = a short story, typically with animals as characters, conveying a moral

Parable = a short, simple story that teaches or explains an idea, especially a moral or religious one

So, option B is the correct answer.

A building in which aircraft are housed is termed as Hangar.

Granary means a storehouse for threshed grain

Dockyard means an area with docks and equipment for repairing and maintaining ships.

Garage means a building for housing a motor vehicle or vehicles.

Antidote = a chemical substance that stops or controls the effect of a poison.

Anticlimax = an event or experience that causes disappointment because it is less exciting than was expected

Antibody = a protein produced in the blood that fights diseases by attacking and killing harmful bacteria

Antigen = a substance that causes the production of antibodies in the body

So, option A is the correct answer.

Laxative = a medicine or agent for relieving constipation

Panacea =  solution or remedy for all difficulties or diseases

Antidote = a medicine taken or given to counteract a particular poison

Purgative = purging or cleansing, especially by causing evacuation of the bowels, strongly laxative

So, the correct answer is option B.

Edifice means a large, imposing building.

Rotunda means a round building or room, especially one with a dome.

Spire means a tapering conical or pyramidal structure on the top of a building, typically a church tower.

Palace means a large and impressive building forming the official residence of a ruler, pope, archbishop, etc.

Corresponding to the meanings, 'rotunda' is the most suitable response.