Bekhorot 53: words to know

שְׁמַע מִינַּהּ (shema minah): learn from this; conclude from it. Used to confirm that Rabbi Akiva's derivation refers specifically to bringing animal tithes to Jerusalem.
מִשּׁוּם תַּקָּלָה (mishum takala): due to concern for a spiritual mishap. Rabba explains that animal tithes were stopped after the Temple's destruction to prevent illicit use of sacred animals.
קָדָשִׁים קַלִּים (kodashim kalim): sacrifices of lesser sanctity. The Gemara examines whether owner-owned sacrifices of minor sanctity could theoretically be tithed.
לְמַאי נָפְקָא מִינַּהּ (lema'i nafka minah): what is the practical halachic difference. The Gemara asks what practical consequence arises from applying animal tithe sanctity to an existing peace offering.
מְנָא הָנֵי מִילֵּי (mena hanei milei): from where are these matters derived. Introduces the biblical source prohibiting the separation of teruma from one species for a different species.