Food products that used nori were expressed as '磯辺 (isobe)' and the production areas were referred to as '石部,' '磯部,' '石辺' and so on (all are called 'isobe').
海苔が使われている食品には『磯辺』と表現され、また産地には『磯辺』、『石部』、『磯部』、『石辺』（何れも『いそべ』と読む）などの地名を見ることが出来る。