This is the 447th most frequent Estonian word.
avaliku
"Avaliku" means "public" in English.
Here, 'avaliku' (public) modifies 'arvamuse' (opinion) to denote that the 'opinion' belongs to or is shared by the wider public.
Avaliku arvamuse küsitlus näitab sotsiaalseid trende.
The public opinion survey shows social trends.
In this sentence, 'avaliku' (public) qualifies 'ürituse' (event), meaning the event is open to the general public.
Avaliku ürituse korraldamine nõuab luba.
Organizing a public event requires permission.
'Avaliku' describes 'ruumi' (space), indicating that the space is available to or used by the public.