What is the name of the process starting from the start symbol of a grammar, executing a series of productions and ending with a string that cannot be further expanded

What is the process that begins with a grammar's start symbol, performs productions, and finishes with a string that cannot be extended?

What is the name of the type of symbol of a grammar that can be on the left side of a production and can be expanded into other symbols on the right hand side of a production?

What do you name the chain of events that begins with the grammar's start symbol, continues via productions, and terminates in an infinite string?

The process that commences with the start symbol of a grammar, progresses through productions, and culminates in a string that is incapable of accommodating any further characters is commonly referred to as the derivation process.