What is a synonym for "eidos"?

Common synonyms include: appearance, archetype, cognitive schema, eidetic image, essence, facade.

Eidos

/ˈaɪdɒs/ noun

noun ·Rare ·Advanced level

Noun

1
Form; essence; type; species.
2
(anthropology) the distinctive expression of the cognitive or intellectual character of a culture or a social group wordnet

Ancient Greek εἶδος (eîdos, “species”)