Refers to a loud, often emotional vocal outburst, such as yelling or shouting. Can be used for a single cry or a collective outcry.
His yell echoed throughout the room.
Shouts of protest could be heard from the square.
Standard spelling using the common kanji 声 for 'voice'.
Alternative spelling using 喚, which carries a nuance of shouting or crying out.
Compound of わめき (continuative form of わめく 'to yell, to shout') + 声 (こえ 'voice'). The verb わめく is of native Japanese origin, likely onomatopoeic.