This is the 16023rd most frequent Russian word.
пустое
"Empty" or "insignificant."
пустое is used as an adjective meaning 'empty', describing the bucket.
Это пустое ведро.
This is an empty bucket.
пустое is used as a noun, meaning 'something empty', signifying the lack of substance in the words.
Твои слова - пустое!
Your words are empty!
пустое is used as a noun representing 'insignificant or useless things', indicating non-valuable activities.