A store of things is a supply of them that you keep somewhere until you need them.
储存 I handed over my secret store of chocolate. 我交出了我偷偷藏起来的巧克力。
When you store things, you put them in a container or other place and leave them there until they are needed.
存放 • Store the cookies in an airtight tin. 把曲奇饼干存放在一个密封罐中。