der Papierflieger, –

The German word "Papierflieger" is a compound noun made up of:

• Papier = paper
• Flieger = flyer or flyer/aircraft (from the verb "fliegen" meaning "to fly")

Meaning: It refers to a paper airplane, a toy made by folding paper into the shape of an aircraft that can glide in the air.

Similar words:

• Papierschiffchen – paper boat
• Drachen – kite (also something that flies, made differently)

Difference:

• Papierflieger specifically means a paper-made flying object shaped like a plane.
• Unlike kites or paper boats, it is designed to glide through the air after being thrown, not to float on water or fly attached to strings.