こうもく項目koumoku
1.

A discrete component or element of a larger set that is categorized based on specific criteria, often used to organize information systematically.

2.

A highlighted entry or title in dictionaries or reference works, serving as a point of access to related information or definitions.

3.

A subdivision within a budget or plan, representing a smaller, specific allocation within broader categories.

Example:

これは何の項目に入るか。

かんれんこうもく関連項目kanrenkoumoku
1.

A concept or subject that has a connection or association with another topic, often providing additional context or information.

2.

An item or entry that is linked to a main subject, typically found in lists or indexes to facilitate further exploration of related themes.

3.

Aspects or components that are pertinent to a central issue, serving to highlight the interrelationships between various elements in a broader discussion.

4.

A reference point for topics that share relevance or are connected to the primary subject in question.