tetraskele vs tetraskelion

tetraskele and tetraskelion both are nouns.

Word	Noun	Adjective	Verb	Adverb
tetraskele	Yes	No	No	No
tetraskelion	Yes	No	No	No

As nouns, tetraskele and tetraskelion are synonyms defined as:

tetraskele and tetraskelion: a figure consisting of four stylized human arms or legs (or bent lines) radiating from a center

tetraskele (noun)	tetraskelion (noun)
a figure consisting of four stylized human arms or legs (or bent lines) radiating from a center	a figure consisting of four stylized human arms or legs (or bent lines) radiating from a center