delta vs wheel arch

delta

noun
  • A type of cargo bike that has one wheel in front and two in back. 

  • The rate of change in an option value with respect to the underlying asset's price. 

  • A landform at the mouth of a river where it empties into a body of water. 

  • The angle subtended at the center of a circular arc. 

  • A value in delta notation indicating the relative abundances of isotopes. 

  • a star that is usually the fourth brightest of a constellation. 

  • The symbol Δ. 

  • The closed figure produced by connecting three coils or circuits successively, end for end, especially in a three-phase system. 

  • one of four baryons consisting of up and down quarks with a combined spin of 3/2: Δ⁺⁺ (uuu), Δ⁺ (uud), Δ⁰ (udd), or Δ⁻ (ddd) 

  • The fourth letter of the modern Greek alphabet Δ, δ. 

  • A change in a quantity, likely from "d" for "difference". 

  • A small but noticeable effect. Compare epsilon. 

  • A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment. 

  • The set of differences between two versions of a file. 

verb
  • To compare two versions of the same file in order to determine where they differ (where a programmer has made edits). 

  • To calculate the differences between the characters in an enciphered text and the characters a fixed number of positions previous. 

wheel arch

noun
  • The shaped part of the bodywork of a car or other vehicle that allows the wheel to be accessed, and in the case of front wheels, enable them to be steered. 

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