'Ghost' in the Bible

When the disciples saw him walking on the sea, they were terrified and cried out, "It's a ghost!" And they screamed in terror.

but when they saw him walking on the sea, they thought it was a ghost and began to scream.

They were startled and terrified, thinking they were seeing a ghost.

Look at my hands and my feet, because it's really me. Touch me and look at me, because a ghost doesn't have flesh and bones as you see that I have."