pantropic vs equatorial

pantropic is not a noun while equatorial is a noun.

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

pantropic (noun)	equatorial (noun)
	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

pantropic (adjective)	equatorial (adjective)
distributed throughout the tropics	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