Birdsong and Mantra

Birdsong noun - The characteristic sound produced by a bird.

Mantra and birdsong are semantically related. In some cases you can use "Mantra" instead a noun "Birdsong".

Mantra noun - (Sanskrit) literally a `sacred utterance' in Vedism; one of a collection of orally transmitted poetic hymns.

Birdsong and mantra are semantically related. Sometimes you can use "Birdsong" instead a noun "Mantra".