We sometimes say things like feelings or hopes 'vanish'. This means they go away completely and you no longer feel or have them.
All my fears vanished after the talk.
Her hope seemed to vanish in the end.
'Vanish' can mean to cause something to disappear. Usually, this happens in magic or stories, where something is made to go away quickly.
She vanished the rabbit with a wave.
The wizard vanished the stone from sight.
Sometimes 'vanish' means something no longer exists or can be found. It can happen slowly, like a language or ice melting away.
Many old languages have vanished now.
The ice will vanish in the summer heat.
'Vanish' can mean to leave a place suddenly and quietly so that no one sees you. It often means escaping or running away.
The thief vanished before the police came.
She vanished into the crowd quickly.
'Vanish' can mean that something digital or electronic stops working or is removed and cannot be found, like an app or signal.
The app vanished from the store yesterday.
The signal vanished during the storm.
'Vanish' as a noun means the act of disappearing quickly. It is often used when talking about magic or tricks in stories.
The vanish in the story shocked the audience.
The magician's vanish was very quick.