A connoisseur is someone who has a deep knowledge and appreciation for something, especially fine art, food, wine, or music. This person has refined tastes and can make discerning judgments about quality.

A misnomer refers to the use of a name or term that is inaccurate or inappropriate for a particular person, thing, or concept. For example, calling a koala bear a "bear" is a misnomer, as it is not actually a bear.

A taciturn person is one who tends to be habitually silent, reserved, or uncommunicative. This term often refers to someone who speaks very little or avoids conversation.

A postscript is an additional message added after the main body and signature of a letter or document. It is used to include an afterthought or something that was forgotten in the original message.

A boutique is a small, specialized retail store that often sells high-end, fashionable clothing, accessories, and cosmetics. These shops are typically known for their curated selection of trendy or unique products.

A Stoic is a person who remains indifferent to pleasure or pain, showing little or no emotion regardless of external circumstances. The term comes from the philosophy of Stoicism, which advocates for enduring hardship with resilience and emotional control.

Incorrigible means something or someone that cannot be corrected, reformed, or improved. It is typically used to describe a person who is resistant to change or correction, often in a negative sense (e.g., an incorrigible liar).

Superstition refers to a belief in supernatural influences, such as the belief that certain events or actions can cause good or bad outcomes without scientific or logical reasons. It reflects an excessive or irrational belief in the supernatural.

Pseudonym is a fictitious name used by an author instead of their real name.

Nickname (A) is a familiar or affectionate name, but not necessarily used by authors.

Nomenclature (C) refers to a system of naming things.

Impersonate (D) refers to pretending to be someone else, not using a pen name.

Biography is the account of a person's life written by someone else.

Autobiography (B) is a person's own account of their life.

History (C) is a record of past events, not necessarily focused on one person.

Manuscript (D) is a handwritten or typed document, not a history of someone's life.