ついせき追跡tsuiseki
1.

The act of following or pursuing someone who is trying to escape, often used in the context of chasing a suspect or fugitive.

2.

The process of tracing or investigating the development or progression of events, ideas, or phenomena over time.

3.

A method of tracking and examining the status or behavior of individuals or things after a particular event, such as alumni activities post-graduation or product usage after sale.

Example:

その警官は泥棒を追跡した。

ついせきしゃ追跡者tsuisekisha
1.

A person or entity that follows someone or something in order to catch or capture them, often driven by a specific goal or motivation.

2.

An individual who actively seeks to track down or locate another person, typically for the purpose of investigation or monitoring.

3.

A figure that embodies the act of pursuing, whether for sport, rivalry, or personal endeavors, suggesting a relentless or determined attitude.

ついせきちょうさ追跡調査tsuisekichousa
1.

A systematic investigation that monitors and analyzes the ongoing progress or outcomes of a particular subject or phenomenon over time.

2.

A research method focused on tracking the subsequent activities or usage patterns of individuals or items after a specified event, such as graduation or product sale.

3.

An inquiry that aims to trace and document the developments or changes related to a specified topic, ensuring a thorough examination of its progression.