furniture は不可算名詞 (準2級プラス頻出)
"a furniture"
"two furnitures"
"a piece of furniture"
"some furniture"
同じパターン: information, advice, baggage [[p2ptrv-luggage]], equipment, software [[p2ptec-software]]。動詞 furnish / 形容詞 furnished
a furnished apartment=家具付きアパート
賃貸で頻出。
fu- 語の弁別
furniture
future
fortune
feature。