What is a symbol table? What is the difference between a terminal and a nonterminal? Draw the parse tree for the expression x * y + x + z based on the syntax diagrams in Figure 6.15. Describe the...

What is a symbol table? What is the difference between a terminal and a nonterminal? Draw the parse tree for the expression x * y + x + z based on the syntax diagrams in Figure 6.15. Describe the strings that conform to the structure Chacha according to the following syntax diagrams.