careless vs red-handed

careless

adj
  • Not giving sufficient attention or thought, especially concerning the avoidance of harm or mistakes. 

  • Not concerned or worried (about). 

red-handed

adj
  • Showing clear evidence of guilt; in the act of wrongdoing. 

  • Deadly, bloody. 

  • With hands that are red from blood. 

How often have the words careless and red-handed occurred in a corpus of books? (source: Google Ngram Viewer )