atom vs trace

atom

noun
  • A very small amount; a whit. 

  • The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons. 

  • In logical atomism, a fundamental fact that cannot be further broken down. 

  • The smallest medieval unit of time, equal to fifteen ninety-fourths of a second. 

  • An age group division in hockey for nine- to eleven-year-olds. 

  • An element of a set that is not itself a set; an urelement. 

  • A mote of dust in a sunbeam. 

  • A hypothetical particle posited by Greek philosophers as an ultimate and indivisible component of matter. 

  • The smallest, indivisible constituent part or unit of something. 

  • A non-zero member of a partially ordered set that has only zero below it (assuming that the poset has a least element, its "zero"). 

  • An individual number or symbol, as opposed to a list; a scalar value. 

trace

noun
  • A very small amount. 

  • The ground plan of a work or works. 

  • The intersection of a plane of projection, or an original plane, with a coordinate plane. 

  • The sum of the diagonal elements of a square matrix. 

  • An empty category occupying a position in the syntactic structure from which something has been moved, used to explain constructions such as wh-movement and the passive. 

  • A residue of some substance or material. 

  • An enquiry sent out for a missing article, such as a letter or an express package. 

  • A connecting bar or rod, pivoted at each end to the end of another piece, for transmitting motion, especially from one plane to another; specifically, such a piece in an organ stop action to transmit motion from the trundle to the lever actuating the stop slider. 

  • A mark left as a sign of passage of a person or animal. 

  • An act of tracing. 

  • One of two straps, chains, or ropes of a harness, extending from the collar or breastplate to a whippletree attached to a vehicle or thing to be drawn; a tug. 

  • An informal road or prominent path in an arid area. 

  • A current-carrying conductive pathway on a printed circuit board. 

verb
  • To follow the execution of the program by making it to stop after every instruction, or by making it print a message after every step. 

  • To draw or sketch lightly or with care. 

  • To follow the trail of. 

  • To follow the history of. 

  • To copy onto a sheet of paper superimposed over the original, by drawing over its lines. 

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