troponomy vs troponymy

troponomy and troponymy both are nouns.

Word	Noun	Adjective	Verb	Adverb
troponomy	Yes	No	No	No
troponymy	Yes	No	No	No

As nouns, troponomy and troponymy are synonyms defined as:

troponomy and troponymy: the place names of a region or a language considered collectively

troponomy (noun)	troponymy (noun)
the place names of a region or a language considered collectively	the place names of a region or a language considered collectively
	the semantic relation of being a manner of does something