Fetching details from the dictionary...
seller; vendor
売り主と買い主の間で交渉が成立した。
Negotiations were concluded between the seller and the buyer.
売り主が提示した価格は相場より高かった。
The price proposed by the seller was higher than the market rate.
売り主は物件の欠陥を事前に告知する義務がある。
The seller has an obligation to disclose any defects in the property in advance.