grapevine vs pipeline

grapevine

noun
  • An informal person-to-person means of circulating information or gossip. 

  • A leglock. 

  • The plant, a vine of genus Vitis, on which grapes grow. 

  • A move in which the feet are alternately placed in front of each other, while both remaining on the ice or ground, incorporating half-turns. 

  • A rumor. 

verb
  • To restrain in a leglock. 

pipeline

noun
  • A channel (either physical or logical) by which information is transmitted sequentially (that is, the first information in is the first information out). 

  • A conduit made of pipes used to convey water, gas or petroleum etc. 

  • A system or process through which something is conducted. 

  • The inside of a wave that a surfer is riding, when the wave has started closing over it. 

verb
  • To design (a microchip etc.) so that processing takes place in efficient stages, the output of each stage being fed as input to the next. 

  • To connect a tube from ones mouth to ones anus (or the anus of another), in order to force someone to eat feces. 

  • To convey something by a system of pipes 

  • To lay a system of pipes through something 

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