Barn owl and Bird of night

Barn owl noun - Mottled buff and white owl often inhabiting barns and other structures; important in rodent control.

Bird of night and barn owl are semantically related. In some cases you can use "Bird of night" instead a noun phrase "Barn owl".

Bird of night noun - Nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes.

Barn owl and bird of night are semantically related. Sometimes you can replace phrase "Barn owl" with "Bird of night", this phrases are similar.