different between azimuthal vs zenithal

English

azimuth +? -al

azimuthal (not comparable)

Of or pertaining to the azimuth; in a horizontal circle.
(cartography) Describing a map projection which preserves direction for all points relative to a selected point (or in some cases two points).

azimuthal (plural azimuthals)

From zenith +? -al.

zenithal (not comparable)

Of or pertaining to a zenith.
- 1891, Thomas Hardy, Tess of the d’Urbervilles, Phase the Fourth, Chapter 25,^[1]
  […] since he had last shared in the Vicarage life it had grown even more distinctly foreign to his own than usual. Its transcendental aspirations—still unconsciously based on the geocentric view of things, a zenithal paradise, a nadiral hell—were as foreign to his own as if they had been the dreams of people on another planet.
(cartography, of a projection) azimuthal

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