Apex vs. Zenith

Difference Between Apex and Zenith
Apexnoun
The "highest" or the greatest point of something.
the apex of the buildingZenithnoun
(astronomy) The point in the sky vertically above a given position or observer; the point in the celestial sphere opposite the nadir.
Apexnoun
(figuratively) The moment of greatest success, expansion, etc.
the apex of civilizationZenithnoun
(astronomy) The highest point in the sky reached by a celestial body.
Apexnoun
(geometry) The topmost vertex of a cone or pyramid (in their conventional orientation).
Zenithnoun
(by extension) Highest point or state; peak.
Apexnoun
The "pointed" fine end of something.
Zenithnoun
the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected
Apexnoun
The lowest part of the human heart.
Apexnoun
The deepest part of a tooth's root.
Apexnoun
(botany) The end of a leaf, petal or similar organ opposed to the end where it is attached to its support; the tip.
Apexnoun
(astronomy) The point on the celestial sphere toward which the sun appears to move relative to nearby stars.
Apexnoun
(physics) The lowest point on a pendant drop of a liquid.
Apexnoun
The end or edge of a vein nearest the surface.
Apexnoun
(typography) A diacritic in Classical Latin that resembles and gave rise to the acute.
Apexnoun
(typography) A diacritic in Middle Vietnamese that indicates /ŋ͡m/.
Apexnoun
the highest point (of something);
at the peak of the pyramidApexnoun
the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars