wall; barrier

cardboard (corrugated)

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

sound; echo; voice

wall, barrier, obstacle, partition

ball (sphere) / (basebal) ball (pitch that falls outside the strike zone)

bowl

Short for ボール紙 (bōru-gami): non-corrugated cardboard, pasteboard / Short for 段ボール (danbōru): corrugated cardboard

ball (formal dance event)

A sound made by one object hitting another. Thud; bang; thump. / A word used to indicate the start of a race or competition.