noun
Refers to the lottery system or event itself, not a physical ticket.
年末ジャンボ宝くじは毎年多くの人が買います。
Many people buy the year-end jumbo lottery every year.
宝くじで一億円当たっ
What would you do if you won 100 million yen in the lottery?
noun
Refers to the physical ticket itself.
宝くじを10枚買った。
I bought ten lottery tickets.
当選した宝くじを銀行に持っていく。
I take the winning lottery ticket to the bank.