The young man would shriek whenever he saw a ghost.
Shrieks is a noun (plural form of shriek) and a verb (third person singular conjugation of shriek).
dark woods
This is a banshee.
with it's shrieks or screams you could say
No, but they may have communicated with body language, or by grunts or shrieks.
Moans, Creaks, Whistles, Squeaks, Shrieks
cackles, howls, cries, shrieks, bellows...
Monsters vs- Aliens - 2013 98 Pound Cockroach When Nature Shrieks 1-9 was released on: USA: 22 June 2013
"shrieks like mandrakes torn out of the earth" (scene 3)
Ewoks - 1985 Home Is Where the Shrieks Are Princess Latara 2-2 was released on: USA: 20 September 1986 UK: 7 October 1988 West Germany: 9 November 1988
With shrieks and grunting calls, and body language. Their facial expressions also can determine their mood and show aggessiveness.