I know that contain can mean "to hold or inclose within an area or volume"
But how does it work in this example " the list contains the groceries".....there are no physical groceries CONTAINED there, only listed, so what is it that they mean or how is this word being used? Do they mean the groceries are more less expressed, included...one defintion is contain means to 'have as contents, what is spoken or written about" Is this true, how would this be defined? Same with "My idea is contained in the book".....ideas are abstract, the book cannot hold but more or less simply convey the idea.
IS this the sense of contain they are referring too? Please help, Thankyou