BT AZ 9a(14) :ספרא בצירא ותנא תוספאה‏ : a scribe is one who writes defectively while a tanna is one who writes fully
See the entire entry for bṣyr n.m. one who writes defectively

BT AZ 9a(14) :ספרא בצירא ותנא תוספאה‏ : the scribe is the one (who writes) with defective spelling, and the Tanna is the one (who writes) plene
See the entire entry for tosp̄āy, tosp̄āˀā adj. one who writes plene