In Cpp, the "move semantics" of an object refers to the concept that "move but not copy the object to a newer", but the word "semantics" really confuse me.
What is the difference between the "semantics" and "function"? How to use this word correctly? If I realize a method called "max(A,B)", could we say "I realize a max semantic"? If I coding a object called "list", could we say "I realize a sequence storage semantic"?
"Semantics" is the meaning or interpretation of written instructions. It is often contrasted to "syntax", which describes the form of the instructions. For example, an assignment foo = bar has the same form in many programming languages, but not necessarily the same meaning. In C++ it can mean copy, in Rust it can mean move, and in Java or Python it means copy the object reference.
"Move semantics" applied to C++ constructs such as assignment or argument passing is the situation in which the syntax of those constructs is interpreted as object move as opposed to object copy. Semantics is not a synonym for "function", so "max semantics" doesn't make much sense.
Other examples where the word can be applied is reference semantics as opposed to value semantics, or "short-circuit semantics" (of the && and || operators) as opposed to eager evaluation. Basically, anything where there are multiple possible meanings of what you wrote, and you need to name and pinpoint the correct one.