chain vs train

chain

noun
  • A series of interconnected things. 

  • A series of interconnected links of known length, used as a measuring device. 

  • A series of stores or businesses with the same brand name. 

  • A number of atoms in a series, which combine to form a molecule. 

  • A unit of length equal to 22 yards. The length of a Gunter's surveying chain. The length of a cricket pitch. Equal to 20.12 metres, 4 rods, or 100 links. 

  • That which confines, fetters, or secures; a bond. 

  • A series of interconnected rings or links usually made of metal. 

  • Iron links bolted to the side of a vessel to bold the dead-eyes connected with the shrouds; also, the channels. 

  • A long measuring tape. 

  • A totally ordered set, especially a totally ordered subset of a poset. 

  • A sequence of linked house purchases, each of which is dependent on the preceding and succeeding purchase (said to be "broken" if a buyer or seller pulls out). 

  • A livery collar, a chain of office. 

  • The warp threads of a web. 

verb
  • To link multiple items together. 

  • To connect as if with a chain, due to dependence, addiction, or other feelings 

  • To measure a distance using a 66-foot long chain, as in land surveying. 

  • To relate data items with a chain of pointers. 

  • To obstruct the mouth of a river etc with a chain. 

  • To obligate. 

  • To fasten something with a chain. 

  • To secure someone with fetters. 

  • To load and automatically run (a program). 

  • To be chained to another data item. 

train

noun
  • A set of interconnected mechanical parts which operate each other in sequence. 

  • A long, heavy sleigh used in Canada for the transportation of merchandise, wood, etc. 

  • A transient trail of glowing ions behind a large meteor as it falls through the atmosphere or accompanying a comet as it nears the sun; tail. 

  • A group of people following an important figure such as a king or noble; a retinue, a group of retainers. 

  • A group or class of people. 

  • A sequence of events or ideas which are interconnected; a course or procedure of something. 

  • A trail or line of something, especially gunpowder. 

  • A series of specified vehicles (originally tramcars in a mine as usual, later especially railway carriages) coupled together. 

  • The tail of a bird. 

  • A mechanical (traditionally steam-powered, now typically diesel or electrical) vehicle carrying a large number of passengers and freight along a designated track or path; a line of connected cars or carriages considered overall as a mode of transport; (as uncountable noun) rail or road travel. 

  • The elongated body or form of something narrow and winding, such as the course of a river or the body of a snake. 

  • The men and vehicles following an army, which carry artillery and other equipment for battle or siege. 

  • An act wherein series of men line up and then penetrate a person, especially as a form of gang rape. 

  • A set of things, events, or circumstances that follow after or as a consequence; aftermath, wake. 

  • A series of electrical pulses. 

  • The elongated back portion of a dress or skirt (or an ornamental piece of material added to similar effect), which drags along the ground. 

  • A group of animals, vehicles, or people that follow one another in a line, such as a wagon train; a caravan or procession. 

  • A software release schedule. 

verb
  • To encourage (a plant or branch) to grow in a particular direction or shape, usually by pruning and bending. 

  • To improve one's fitness. 

  • To create a trainer for; to apply cheats to (a game). 

  • To teach and form (someone) by practice; to educate (someone). 

  • To proceed in sequence. 

  • To move (a gun) laterally so that it points in a different direction. 

  • To practice an ability. 

  • To trace (a lode or any mineral appearance) to its head. 

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