There are several synonyms for the phrase "worship service" that can be used to refer to religious gatherings and ceremonies. Some common terms include "church service," "religious service," "spiritual ceremony," "devotional gathering," and "prayer meeting." These terms can be interchanged depending on the religious context and the specific type of ceremony or gathering being referred to. For example, "church service" and "religious service" may be used interchangeably in reference to a Christian worship gathering, while "prayer meeting" may be more specific to a gathering focused solely on prayer and meditation. Ultimately, the usage of synonyms for "worship service" depends on the specific religious tradition and ceremonial practices being observed.