capacity vs know

capacity

noun
  • Mental ability; the power to learn 

  • A measure of such ability; volume 

  • The maximum amount that can be held 

  • Electrical capacitance. 

  • Legal authority (to make an arrest for example) 

  • The maximum that can be produced. 

  • The ability to hold, receive, or absorb 

  • The maximum that can be produced on a machine or in a facility or group. 

  • A role; the position in which one functions 

  • Capability; the ability to perform some task 

  • A faculty; the potential for growth and development 

adj
  • Filling the allotted space. 

know

noun
  • Knowledge; the state of knowing. 

  • Knowledge; the state of knowing; now confined to the fixed phrase ‘in the know’ 

verb
  • To perceive the truth or factuality of; to be certain of or that. 

  • To experience. 

  • To understand or have a grasp of through experience or study. 

  • To be or become aware or cognizant. 

  • To be able to play or perform (a song or other piece of music). 

  • To be acquainted or familiar with; to have encountered. 

  • To be aware of; to be cognizant of. 

  • To recognize as the same (as someone or something previously encountered) after an absence or change. 

  • To have knowledge; to have information, be informed. 

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