Hangul syllable Om

It writes Om in Hangul and also means scabies in Korean.

Om, also written Aum or Oṃ, is a sacred syllable in Indian religious traditions, with roots in Vedic-era India. Interpretations of its A-U-M sounds include creation, continuance, and dissolution.

Korean Buddhist texts use 옴 at the start of mantras and sometimes connect it with Vairocana, a Buddha. A Korean Buddhist edition printed in 1560 records it in a six-syllable mantra; Buddhist temple decoration also used it during the Joseon period.

what does 옴 mean when someone sends it?

Use the surrounding message; a lone syllable does not settle it.

A temple, chant, or Buddhist discussion points to the mantra; a Korean sentence about a skin condition points to the disease. A standalone message is ambiguous, so ask what the sender means if the distinction matters.

is 옴 the same as ॐ?

They represent the same sacred syllable in different scripts.

옴 is a Hangul syllable block; ॐ is a distinct sign used in Indic writing. Korean Buddhist sources also use 唵, a Chinese-character transcription. These are connected spellings of Om, not versions of one glyph; the script identifies the writing tradition.