online vs pick up

online

verb
  • To bring (a system, etc.) online; to promote to an active or running state. 

adj
  • Available over, or delivered from, the Internet. 

  • Of a computer: actively connected to the Internet or to some other communications service. 

  • Connected to the Internet. 

  • Available on a computer system, even if not networked. 

  • Of a generator or power plant: connected to the grid. 

  • Of a system: active, particularly building facilities (such as power) or a factory or power plant. 

  • Immersed in Internet culture. (Usually modified by an intensifier such as extremely or terminally) 

adv
  • While online; while in a running or active state, or connected to the Internet. 

pick up

verb
  • To receive (a radio signal or the like). 

  • To acquire (something) accidentally; to catch (a disease). 

  • To collect and detain (a suspect). 

  • To lift; to grasp and raise. 

  • To clean up; to return to an organized state. 

  • To point out the behaviour, habits, or actions of (a person) in a critical manner; used with on. 

  • To meet and seduce somebody for romantic purposes, especially in a social situation. 

  • To receive calls; to function correctly. 

  • To record; to notch up. 

  • To learn, to grasp; to begin to understand; to realize. 

  • To promote somebody who was previously passed over. 

  • To collect an object, especially in passing. 

  • To answer a telephone. 

  • To take control (physically) of something. 

  • To mark, to defend against an opposition player by following them closely. 

  • To behave in a manner that results in a foul. 

  • To restart or resume. 

  • To notice, detect or discern; to pick up on 

  • To improve, increase, or speed up. 

  • To reduce the despondency of. 

  • To pay for. 

  • To obtain and publish a story, news item, etc. 

  • To collect a passenger. 

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