Bekhorot 27: words to know

טוֹבַת הֲנָאָה (tovat hana'ah): benefit of discretion in choosing gift recipients. Refers to an owner's financial value in deciding which priest receives teruma.
קְדוּשַּׁת הַגּוּף (kedushat haguf): inherent physical sanctity. Contrasts teruma with monetary sanctity, explaining why it cannot be redeemed.
קְדוּשַּׁת דָּמִים (kedushat damim): sanctity inherent in monetary value. Used to describe priestly animal gifts which can be converted to money.
בְּטֵילָה בְּרוֹב (beteilah berov): nullified by a simple majority. Shmuel states this lenient rule for teruma grown outside the Land of Israel.
הִקִּישׁוֹ הַכָּתוּב (hikkisho hakatuv): the verse compared or juxtaposed it. Used to link eating a firstborn to the peace offering's breast and thigh.