prosthion vs prostheon

prosthion and prostheon both are nouns.

Word	Noun	Adjective	Verb	Adverb
prosthion	Yes	No	No	No
prostheon	Yes	No	No	No

As nouns, prosthion and prostheon are synonyms defined as:

prosthion and prostheon: craniometric point that is the most anterior point in the midline on the alveolar process of the maxilla

Other synonyms of prosthion include alveolar point.

prosthion (noun)	prostheon (noun)
craniometric point that is the most anterior point in the midline on the alveolar process of the maxilla	craniometric point that is the most anterior point in the midline on the alveolar process of the maxilla