Emptiness
Part of speech: noun
Definition: The state or feeling of being empty
Example sentence: One cannot long remain so absorbed in contemplation of emptiness without being increasingly attracted to it. In vain, one bestows on it the name of infinity; this does not change its nature.
Vacuum
Part of speech: noun
Definition: A region of space that contains no matter.A vacuum cleaner.
Part of speech: verb
Definition: To clean (something) with a vacuum cleaner.To use a vacuum cleaner.
Example sentence: Art is essentially communication. It doesn't exist in a vacuum. That's why people make art, so other people can relate to it.