A yacht is a type of fast sailing boat. Sailboats do not have engines or motors, they move because the wind blows them along.
A Zeppelin is a type of rigid airship originally designed by German Count Ferdinand von Zeppelin in the early 20th century. The Zeppelin design was so popular the name became used for all rigid airships.
The most famous Zeppelin was the Hindenburg, which crashed spectacularly in 1937.
