圭: a unisex given name / 啓, 恵, 蛍, 慧: a male given name

計: meter, measuring instrument / 系: system, family, style / 刑: punishment / 形: form, tense

四辺形: a quadrilateral (polygon having four sides)

競馬: horse race

多角形: polygon

七角形: a heptagon

形容: description; appearance / 掲揚: hoisting

形容: describe / 掲揚: hoist

京葉: (between) Tokyo and Chiba

経時: age / 刑事: police detective, sheriff / 掲示: notice, post / 啓示: revelation / 慶事: auspicious event / 計時: clocking / 繋辞: copula / 兄事: deferring to someone