hot and cold

world / border

boundary / a bounded area or region / a bounded group of people, a society, a world as a social grouping, such as business, celebrities, or finance / the border edge of a thing

border, boundary, limits

Kyūjitai form of 楽

a sound / when used with a "hear" verb, a rumor or fame / news, tidings / a reply, response

musician

man, male adult person

a woman, a female adult person

音声学: phonetics