Holy Ghost or Holy Spirit?

QUESTION: Which is the correct translation of the Greek, Holy Ghost or Holy Spirit?

ANSWER: Both are correct, but Holy Spirit is  preferable,  because the word "ghost" has in modern times suffered a degradation. You would be shocked to hear John 4:24 quoted thus, "God is a ghost." Hence the American Revision invariably says Holy Spirit. The English were more conservative. Probably they thought it would spoil too many good hymns, such as Bishop Ken's Doxology, to let the term ghost go out of religious use.

— Steele's Answers, p. 227.