That's how the parser is organized.
you must distinguish between
(Contrived) Examples:
map and eval fall into the function category.
NB: If you wanted to use a compound statement inside an expression, you would need to put it inside do {BLOCK}
HTH! :)
updates
added links to simple-statements, terms and expressions
PS: It's a bit confusing that Larry's definition of "Term" (leaf of the syntax-tree) is different to the one in mathematics.
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