No, parsley root and parsnip are not the same, although they look quite similar. From a keto perspective, parsley root is a better option since it has fewer carbs than parsnip. Parsnip is higher in carbohydrates and can impact your carb intake if you're following a strict keto diet. If you're looking to keep the recipe low-carb, stick to parsley root or opt for celeriac (celery root) as an alternative.