equatorial vs pantropic

equatorial is a noun but pantropic is not a noun.

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

equatorial (noun)	pantropic (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

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