The name Holy Spirit singles out one attribute of God – His holiness – that pertains to all three persons of the Trinity. This name is the most commonly used for the third person of the Trinity. The rather archaic “Holy Ghost” is equivalent.
Holy Spirit in Hebrew:
Strong’s Concordance numbers: 7307, 6944
Bible references: Ps. 51:11; Isa. 63:10-11
Create in me a clean heart, O God; and renew a right spirit within me.
Cast me not away from thy presence; and take not thy holy spirit from me.
Restore unto me the joy of thy salvation; and uphold me with thy free spirit. (Psalm 51:10-12 KJV)
Holy Spirit in Greek:
To pneuma to hagios
Strong’s Concordance numbers: 4151, 40
Bible references: Matt. 1:18; John 14:26; Acts 2:33; Eph. 4:30 (Holy Spirit of God) and about 90 times more.
The Advocate, the Holy Spirit, whom the Father will send in my name, will teach you all things and will remind you of everything I have said to you. (John 14:26)
There are similar names for God’s Spirit: Spirit of God, Spirit of the LORD, and Spirit of holiness.