good-for-nothing vs not worth a brass farthing

good-for-nothing

adj

  • Useless; worthless. 

noun

  • A person of little worth or usefulness. 

not worth a brass farthing

adj

  • Worth nothing or next to nothing. 

How often have the words good-for-nothing and not worth a brass farthing occurred in a corpus of books? (source: Google Ngram Viewer )