Bond
noun
A debt ticket is a bond. You buy it from the government and then they pay it back to you with interest... in theory.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
債券市場は何時まで開いてますか。
What time is the bond market open until?
東京都は来たるオリンピックのため、追加で債券を発行した。
The Tokyo Metropolitan Government has issued additional bonds for the upcoming Olympics.
債券取引は、一億円単位で売買できない人には不利なレートになってるんですよ。
Current bond rates are no good for people who can't trade them in one hundred million yen increments.