Русско-англо-русский юридический словарь

In Judaism, the Holy Spirit, otherwise known as the Holy Ghost, is the divine force, quality and influence of God over the universe or his creatures. In Nicene Christianity, the Holy Spirit is the third person of the Trinity. In Islam, the Holy Spirit acts as an agent of divine action or communication. (Wikipedia)

The English terms "Holy Ghost" and "Holy Spirit" are complete synonyms: one derives from the Old English gast and the other from the Latin loanword spiritus. (Wikipedia)