is a specific kind of: communicator.

is a broader term that covers: crier.

derivation: shout | scream, yell | roar, thunder | bawl, yawp | bellow, roar | screak, screech, skreak, skreigh, squawk.

is a specific kind of: headline, newspaper headline.

derivation: scream, yell.

is a specific kind of: water bird, waterbird, waterfowl.

is a broader term that covers: Anhima cornuta, horned screamer | crested screamer.

is a member of: Anhimidae, family Anhimidae.

derivation: scream, yell | call, cry, holler, hollo, scream, shout, shout out, squall, yell.

is a specific kind of: hit, hitting, striking.