An aspergillum is used to sprinkle the congregation with holy water. Sometimes a priest may use an ornate 'bucket' to contain the holy water and use a bough from a tree, bush or palm frond to sprinkle the water.
Bells are used to remind people that something special is happening at the Eucharist when the bread and wine are to become the body and blood of Christ. In the old days they were rung from the bell...
from Modern Catholic Dictionary by John A. Hardon, S.J. Doubleday & Co., Inc. Garden City, NY 1980The word "catholic", whose original meaning was "general" or "universal" has taken on several...
It is used to carry out church business such as mass, stations of the cross and all other services normally associated with and carried out in a church, however a church is normally called chapel.