According to these Bible verses, could ghosts exist?

The word "spirit" has two different meanings. One is a ghost that some people think come from a person who has died. The Holy Bible spirit is God's holy spirit that lives inside of us that guides us through life. Your God's spirit is the one who tells you right from wrong. Your God's spirit leads you to read the Holy Bible. Leads you to receive Jesus as the son of God. Leads you to be baptized.