ae (Stylised æ, pronounced “eye”): The name of the Aespa members’ avatar forms. The term is added in front of a member's name and spaced with a hyphen to indicate an avatar (eg. ae-Karina is Karina's avatar).

KWANGYA (Hangul: 광야): The land where Aespa’s aes live.

MY (Hangul: 마이): Aespa’s fandom name. It means “The most precious friend” in Kwangya*.

SYNK: The connection between the Aespa members and their aes. **

REKALL: The time spent between the Aespa members and their aes.

FLAT: A place where the Aespa members and their aes can co-exist.

NAVIS: The AI system which helps the aes connect with the Aespa members

* - It's unclear if "Kwangya" is also the name of the language spoken in Kwangya. SM, please elaborate on this 😂😂

** - This definition is being revised for accuracy, and may not reflect the term's true meaning.