The term "black swan" can refer to two different things in English. Let's break it down:
Literal Meaning: A "black swan" is a large bird that is native to Australia. It has black feathers and a red bill (the part of the bird's face that it uses to eat). It is known for its striking appearance.
Figurative Meaning: In a more abstract sense, a "black swan" is also used to describe an unexpected event that has a major impact. This idea was popularized by the author Nassim Nicholas Taleb in his book "The Black Swan." According to this meaning, a "black swan" is something rare and unpredictable that can change everything.
In professional contexts, talking about "black swan" events can involve analyzing their causes, impacts, and how to prepare for them in the future.
In summary, "black swan" can refer to a unique bird with black feathers or a metaphor for unexpected events that have significant effects.