antepenultimate vs antepenultima

antepenultimate and antepenultima both are nouns.

Word	Noun	Adjective	Verb	Adverb
antepenultimate	Yes	Yes	No	No
antepenultima	Yes	No	No	No

As nouns, antepenultimate and antepenultima are synonyms defined as:

antepenultimate and antepenultima: the 3rd syllable of a word counting back from the end

Other synonyms of antepenultimate include antepenult.

antepenultimate (noun)	antepenultima (noun)
the 3rd syllable of a word counting back from the end	the 3rd syllable of a word counting back from the end

antepenultimate (adjective)	antepenultima (adjective)
third from last