財布

財布

Wallet.

Here, "財布" is used to refer to a wallet, a small case for carrying money.

私は財布を忘れてしまいました。

I forgot my wallet.

In this case, "財布" describes a specific wallet being discussed for its attributes.

この財布はとても高価だと思います。

I think this wallet is very expensive.

"財布" here advises bringing the wallet along for convenience or preparation.

財布を持って行った方がいいですよ。

You should take your wallet with you.