競馬: horse race

多角形: polygon

七角形: a heptagon

敬太: a male given name / 敬大: a male given name / 圭太: a male given name / 京太: a male given name / 啓太: a male given name / 慶田: a surname

養鶏: poultry farming, chicken raising

形態論: linguistic morphology

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

敬二, 桂司, 敬司, 慶二, 敬治, 啓史, 啓司, 啓次: a male given name / 啓治, 圭司, 恵二, 恵治, 桂二, 敬次, 恵司, 啓二: a male given name / 圭二: a male given name

内形: internal dimensions / 内径: inside diameter

模型: plastic hobby model