mainline vs star

mainline

noun
  • In longline fishing the central line to which the branch lines with baits are attached. 

  • An airline's main operating unit, as opposed to codeshares or regional subsidiaries. 

  • The principal route or line of a railway. 

  • A principal vein into which a drug can be injected. 

  • The main repository for a software project, from which different versions (forks) may be split off. 

  • The pipeline carrying wastewater to the public drains or a septic tank. 

adj
  • Normal, principal or standard. 

  • Of or pertaining to the principal route or line of a railway. 

  • Of or pertaining to a surface railway as distinct from an underground, elevated or light rail one. 

  • Of a sequence of opening moves: being part of a main line ("a standard sequence of opening moves considered to be best play"). 

verb
  • To integrate (code, etc.) into the main repository for a software project, rather than separate forks. 

  • To inject (a drug) directly into a vein. 

  • To consume voraciously. 

star

noun
  • A composition of combustible matter used in the heading of rockets, in mines, etc., which, exploding in the air, presents a starlike appearance. 

  • A concave polygon with regular, pointy protrusions and indentations, usually with four, five, or six points. 

  • Any small luminous dot appearing in the cloudless portion of the night sky, especially with a fixed location relative to other such dots. 

  • A luminous celestial body, made up of plasma (particularly hydrogen and helium) and having a spherical shape. Depending on context the sun may or may not be included. 

  • An exceptionally talented or famous person, often in a specific field; a celebrity. 

  • A symbol used to rate hotels, films, etc. with a higher number of stars denoting better quality. 

  • A planet supposed to influence one's destiny. 

  • A star-shaped ornament worn on the breast to indicate rank or honour. 

  • An actor in a leading role. 

  • An asterisk (*) or symbol (★). 

  • A simple dance, or part of a dance, where a group of four dancers each put their right or left hand in the middle and turn around in a circle. You call them right-hand stars or left-hand stars, depending on the hand which is in the middle. 

verb
  • To set or adorn with stars, or bright, radiating bodies; to bespangle. 

  • To shine like a star. 

  • To feature (a performer or a headliner), especially in a movie or an entertainment program. 

  • To mark with a star or asterisk. 

  • To appear as a featured performer or headliner, especially in an entertainment program. 

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