Evensong and Religious song

Evensong noun - The sixth of the seven canonical hours of the divine office; early evening; now often made a public service on Sundays.

Religious song and evensong are semantically related In some cases you can use "Religious song" instead a noun "Evensong".

Religious song noun - Religious music for singing.

Evensong and religious song are semantically related in chant topic. Sometimes you can use "Evensong" instead a noun phrase "Religious song", if it concerns topics such as paean.