As a verb abuy
is alternative form of aby.
As a noun abun is
alternative form of abuna.
As a preposition abun is
alternative form of above.
As a proper noun Abun is
a language, sometimes considered an isolate and sometimes considered West Papuan, spoken in Papua and divided into the dialects Abun Tat (Karon Pantai), Abun Ji (Madik), and Abun Je.