[Waterluvian]

You got me thinking. Can a human language like English be defined with an AST? If so, are there examples? If not, why not? I suspect the answer might be, "yes, it's called [this thing I've heard of a thousand times but never considered it to be a language compiler]"

[general_pizza]

I've heard of sentence diagrams[0] which are tree-like structures used for checking grammatical correctness.

[0] https://en.m.wikipedia.org/wiki/Sentence_diagram