"Grammatical", not "grammar".
"Grammar" is the noun, "grammatical" is the adjective. Hence, "grammatical error", not "grammar error" is more correct. And yeah, your observation of Scott's grammatical errors was still very weak.
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"Grammar" is the noun, "grammatical" is the adjective. Hence, "grammatical error", not "grammar error" is more correct. And yeah, your observation of Scott's grammatical errors was still very weak.