This is because a worship leads to a prayer, and a worship refers to 'a prayer' or 'fortune-telling as a result of communication with a god' which is conducted by Shinto priesthood or a person subject to it (such as fukuotoko [the luckiest man], fukumusume [Good fortune girls], or arrow picker of Yumiya [bow and arrow]), and is so called a worship as an essence of 'Shrine Shinto.'
これは祀りが、祈りに通じることから神職やそれに順ずる者（福男・福娘や弓矢の矢取り）などが行う「祈祷」や「神との交信の結果としての占い」などどであり、いわゆる「神社神道」の本質としての祀りでもある。