Yes Jax;

A Chord is Sometimes used in designing an Airfoil.

Poor, poor Jax. A perfect example of a little Knowledge being Dangerous.
For sure Jax has; "A LITTLE KNOWLEDGE" It seem damn little knowledge.

Jax, get your mind off the image of a Wing! A Chord is use in Airfoils
continually in a Sail without it being a design ingredient. It is the
result of and adjustment. A Chord in a Sail is the result of ajustment
or wind strength Even you admitted it became "Larger" when flaps were
deployed. You really aren't sure about that. but the resultant chord
varied.
It is more of measurement than a design.

There are Airfoil sections in Car roof lines, Building section,
Locomotors,etc. They are also found in wings.

Ole Thom