apex vs sphere

apex and sphere both are nouns.

Word	Noun	Adjective	Verb	Adverb
apex	Yes	No	No	No
sphere	Yes	No	No	No

apex (noun)	sphere (noun)
the highest point (of something)	any spherically shaped artifact
the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars	a particular aspect of life or activity
	the geographical area in which one nation is very influential
	the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
	a solid figure bounded by a spherical surface (including the space it encloses)
	a three-dimensional closed surface such that every point on the surface is equidistant from the center
	a particular environment or walk of life