Menahot 19: Laws, Statutes, and Biblical Repetition

Wherever you have the word "torah" (meaning, law, not the Torah in total) and the word "chukah" (meaning, statute) - then the capacity to invalidate the offering kicks in . But does that mean either/or or both? It certainly sounds like both - but the Gemara tracks it through and either/or sounds better by the end... Plus, the list of occasions or specific categories of people for which these terms are present in context in the Torah. Also, scriptural repetition about the requirements of the grain-offering establishes those details (where the repetition takes place) as essential. But the offering itself must be a permanent one for this essential status. Until the case where temporary status seems not to be a problem, in light of the number of repetitions...?