One Word Substitution - 1

A pseudonym is a false or assumed name adopted by an author instead of their real name. The term specifically refers to pen names used by writers to conceal their identity or for branding. A title is a name, nomenclature is naming system, and nickname is informal name.

A glossary is an alphabetical list of words or terms, especially unusual or technical ones, with explanations or definitions. The term specifically refers to the reference section at the end of a book that helps readers understand specialized vocabulary. An appendix adds material, an index locates topics, and bibliography lists sources.

Mediocre means average or moderate in quality - neither exceptionally good nor exceptionally bad. This directly corresponds to being neither intelligent (very good) nor dull (very bad). Tolerable means endurable, commoner refers to an ordinary person, and diligent means hardworking - none of which capture this middle-ground meaning.

Brittle describes a material that is hard but breaks or shatters easily when subjected to stress. This is the exact definition of something liable to be easily broken. Breakable is too general, ductile means capable of being drawn out into wire (opposite of brittle), and delicate means fragile or requiring careful handling.

Anaemia is the medical condition characterized by a deficiency of red blood cells or hemoglobin in the blood, literally meaning lack of enough blood. Amnesia is memory loss, insomnia is inability to sleep, and allergy is an immune system response - none relate to blood deficiency.

 Homicide means 'the murder of a human being', fratricide means 'the murder of one's brother', regicide is the murder of a king. Infanticide is the murder of a baby.

Cafe, restaurant and canteen do not provide lodging and boarding. 

Ambidextrous specifically means able to use both left and right hands equally well. This is the precise term for someone who can use either hand with ease. Amateur means a beginner, expert means skilled (but doesn't specify handedness), and gluttonous means related to overeating.

Credulous means having or showing too great a readiness to believe things. This perfectly describes a person who readily believes others, often without sufficient evidence. Credible means believable (describing the thing, not the person), sensible means practical, and sensitive means easily affected emotionally.

Extravasate is a medical term meaning to force out (of a vessel) - specifically blood or lymph from their normal vessels. This is the exact meaning described. Extrapolate means to extend conclusions, exuberate is not a standard word, and extricate means to free from difficulty.

Autocracy is a system of government by one person with absolute power - exactly what a dictatorship is. Democracy is rule by the people, anarchy is absence of government, and aristocracy is rule by a privileged elite (not necessarily one person).

Honorary is a position held as an honor only, without service or pay. Hence, correct choice.Voluntary means by one's own will. Sinecure is a position giving income but requiring little work. Gratuitous is complimentary...received free.

Teetotaller specifically refers to a person who completely abstains from alcoholic drinks. Puritan refers to moral strictness (not specifically alcohol), Samaritan means a charitable person, and pedant means someone obsessed with minor details.

Agenda is a list of items to be discussed at a formal meeting.
"The question of export items had been removed from the agenda."