Nigella sativa seed is variously called fennel flower, nutmeg flower, Roman coriander, blackseed, black caraway, or black onion seed. Other names used, sometimes misleadingly, are onion seed and black sesame, both of which are similar-looking but unrelated. The seeds are frequently referred to as black cumin

It is also variously known as kalonji (Hindi कलौंजी kalauṃjī or कलोंजी kaloṃjī), kezahHebrew קצח), chernushka (Russian), çörek otu (Turkish), habbat albarakah (Arabic حبه البركة ḥabbatu l-barakah "seed of blessing") or siyah daneh (Persian سیاه‌دانه siyâh dâne)or كلونجى in urdu.