rushed off one's feet vs throng

rushed off one's feet

adj
  • Extremely busy. 

throng

adj
  • Busy; hurried. 

  • Filled with persons or objects; crowded. 

noun
  • A group of people crowded or gathered closely together. 

  • A group of things; a host or swarm. 

verb
  • To crowd or press, as persons; to oppress or annoy with a crowd of living beings. 

  • To congregate. 

  • To crowd into a place, especially to fill it. 

How often have the words rushed off one's feet and throng occurred in a corpus of books? (source: Google Ngram Viewer )