The term 'Holy Ghost' is a reference to the third person of the Christian Trinity, also known as the Holy Spirit. The crossword solutions for this term are 'COMFORTER' (9 letters), 'Paraclete' (9 letters), and 'Dove' (4 letters). The term 'COMFORTER' refers to the Holy Spirit's role in providing comfort and consolation to believers. The term 'Paraclete' is derived from the Greek word meaning 'one who intercedes or comforts'. Finally, the term 'Dove' is a symbol of the Holy Spirit, which descended upon Jesus at his baptism.