Some wing parts designation
The sharp pods are called anti-shock bodies or flap track fairings. See this question for further information. Simply put, htey are there to reduce drag- transonic drag by smoothly varying the cross sectional area (Whitcomb Area rule) and by covering the flap actuators.

The straight line connecting the wing leading and trailing edges is called chord line; the distance between them is called chord length (both are usually called chord).

The upper and lower wing sufraces are called, well, upper surface and lower surface of wing.