employ vs footprint

employ

noun
  • The state of being an employee; employment. 

verb
  • To hire (somebody for work or a job). 

  • To use (somebody for a job, or something for a task). 

  • To make busy. 

footprint

noun
  • Profession or lifestyle. 

  • A polygon representing the shape of an item. 

  • The impression of the foot in a soft substance such as sand or snow. 

  • Availability of a satellite from the ground. 

  • The surface space occupied by a structure. 

  • The audit trail left by a crashed program. 

  • Space required by a piece of equipment. 

  • The ecological impact of a human activity, machine, etc. 

  • The amount of hard drive space required for a program. 

  • A company's geographic market presence. 

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