Angelus and Angelus bell

Angelus noun - A prayer said 3 times a day by Roman Catholics in memory of the Annunciation.

Angelus bell is a synonym for angelus. In some cases you can use "Angelus bell" instead a noun "Angelus".

Angelus bell noun - The sound of a bell rung in Roman Catholic churches to announce the time when the Angelus should be recited.

Angelus is a synonym for angelus bell. You can use "Angelus" instead a noun phrase "Angelus bell".