Psis vs Apsis - What's the difference?

psis | apsis |


As nouns the difference between psis and apsis

is that psis is while apsis is apse (a semicircular projection from a building).

psis

English

Noun

(head)
  • ----

    apsis

    English

    (wikipedia apsis)

    Noun

    (apsides)
  • (architecture) A recess or projection, with a dome or vault, at the east end of a church; an apse.
  • (astronomy) Either of the points in the elliptical orbit of a planet or comet where it is closest or furthest from the sun; perihelion or aphelion; an apside
  • Derived terms

    * periapsis * apoapsis