equator vs equatorial

equator and equatorial both are nouns.

Word	Noun	Adjective	Verb	Adverb
equator	Yes	No	No	No
equatorial	Yes	Yes	No	No

equator (noun)	equatorial (noun)
an imaginary line around the Earth forming the great circle that is equidistant from the north and south poles	a telescope whose mounting has only two axes of motion, one parallel to the Earth's axis and the other one at right angles to it
a circle dividing a sphere or other surface into two usually equal and symmetrical parts

equator (adjective)	equatorial (adjective)
	of or existing at or near the geographic equator
	of or relating to conditions at the geographical equator
	of or relating to or at an equator