This is the 10215th most frequent Japanese word.
防波堤
Breakwater; a structure built to protect a shore or harbor from waves.
In this sentence, '防波堤' is used in its literal sense, referring to a structure that protects against ocean waves.
防波堤は波を防ぎ、港の安全を守ります。
The breakwater prevents waves and secures the safety of the harbor.
Here, '防波堤' is used to describe a physical location that is associated with a fishing activity.
その防波堤の周辺は釣りスポットとして有名です。
The area around the breakwater is famous as a fishing spot.
In this sentence, '防波堤' is metaphorically used to signify a measure or policy that protects against impending problems.