Concept about death

I read Lucas a book about stars. One of the chapters is about Red Giant.  It is predicted that our Sun will reach this stage in approximately five billion years.  It is a dying stage of a star.

'Will everything die?' Lucas asked.

'Yes' I replied briefly, and added 'everything has a beginning and an end, it is what I believe.'

'Will everyone die?'

'Yes, just depends on time, human's life span is usually within 100 years or less.'

'I see.  How about trees?'

'Yes, they will, although they live much longer than people usually.'

'How about our Earth?'

'Sure! When the Sun becomes a red giant, or when an asteroid attacks us severely.'

'Why would our Earth die if the Sun would become a red giant?'

'Because the Sun will stretch and expand and swallow not only us but the whole solar system.'

'I see. So how about volcanoes?'

'Of course they will die based on what I believe.'

'How will a volcano die?'

'By erosion and disintegration through wind, rain and heat.....'

'No!' Lucas didn't agree. 'Volcano will die when it extincts.'

I replied, 'to me, it is not dead, an extinct volcano just means it is not active, but it still stands on the ground. You can only describe it is dead if it is completely gone.'

Lucas is not convinced, 'no! tell me what is the Chinese name of an "extinct volcano".'

'死火山!'

'See?'

'No, it just means inactive, but it is still there standing up straight....'

Then we quarreled for another five minutes.

What a good debate about the concept of death... with a five years old boy.