Phenomenon (noun)

  1. A fact, occurrence or situation that is observed to exist or happen.
  2. A rare, significant, or unusual event or circumstance.
  3. A thing or event that is remarkable or noteworthy.

Origin:

From late latin phaenomenon, from greek φαινόμενον (phainomenon), from φαίνεσθαι (phainesthai, "to appea.r")

Examples:

  1. The phenomenon of global warming.
  2. The northern lights are a natural phenomenon.
  3. The phenomenon of the stock market crash.
Some random words: chow, vineyard, debarment