ball of fire vs lifeless

ball of fire

noun
  • A person who is especially hard-working, high-achieving, ambitious, or active. 

lifeless

adj
  • inanimate; having no life 

  • dull or lacking vitality 

  • dead; having lost life 

  • uninhabited, or incapable of supporting life 

How often have the words ball of fire and lifeless occurred in a corpus of books? (source: Google Ngram Viewer )