down the drain vs functioning

down the drain

prep

  • wasted or irretrievable. 

functioning

adj

  • Mentally disabled but still able to survive in wider society. 

  • Functional, working 

noun

  • Manner by which something functions; the workings. 

  • Action of the verb function. 

How often have the words down the drain and functioning occurred in a corpus of books? (source: Google Ngram Viewer )