Chord – The Wise Pilot

The distance between the leading and trailing edges of a wing measured along the chord line is the chord length or, more simply, the chord.

Glossary: Angle of Attack
The Angle of Attack is the angle at which relative wind meets an aerofoil. It is the angle formed by the chord of the aerofoil and the direction of the relative wind or the vector representing the relative motion between the aircraft and the atmosphere.
Glossary: Angle of Incidence
On fixed-wing aircraft, the angle of incidence is the angle between the chord line of the wing where the wing is mounted to the fuselage and a reference axis along the fuselage.