Vocabulary and Synonyms

Corrode means to destroy or damage metal or stone slowly by chemical action, which is synonymous with rusting.

Corticate means covered with a cortex or bark, or having a hard outer coating. Having cortex is the literal definition, though note cortex is misspelled.

Cosmos refers to the universe seen as a well-ordered, harmonious whole. Systemetic whole (with typo in systematic) captures this concept of an ordered, complete system.

To cosset means to care for and protect in an overindulgent way, often treating someone like a pet. While 'a pet' is a noun and the verb 'cosset' implies the act of pampering, it is the intended answer in this context.

A coterie is a small group of people with shared interests or tastes, especially one that is exclusive. A clique is a synonym for such a group.

Countenance refers to a person's face or facial expression. Aspect is a synonym that captures the appearance or look of something.

A counterpane is a bedspread or coverlet. This is a direct definition.

A counterfeiter is someone who makes fraudulent imitations of something, such as money. A forger is a synonym for this role.

A country is a nation or a specific region of land. Among the choices, region is the most appropriate synonym.

A courtesan is a prostitute, especially one with wealthy or upper-class clients. This is the standard definition.

A covenant is an agreement or contract between two or more parties. Contract is the correct synonym.

A coward is someone who lacks courage and is easily frightened. Timid is the best adjective describing this trait.