abutment vs union

abutment

noun
  • The point of junction between two things, in particular a support, that abuts. 

  • A construction that supports the ends of a bridge; a structure that anchors the cables on a suspension bridge. 

  • The part of a valley or canyon wall against which a dam is constructed. 

  • A fixed point or surface where resistance is obtained. 

  • That element that shares a common boundary or surface with its neighbor. 

  • The solid portion of a structure that supports the lateral pressure of an arch or vault. 

  • The tooth that supports a denture or bridge. 

  • Something that abuts, or on which something abuts. 

  • The state of abutting. 

union

noun
  • The act of uniting or joining two or more things into one. 

  • An affiliation of several parishes for joint support and management of their poor; also the jointly-owned workhouse. 

  • That which is united, or made one; something formed by a combination or coalition of parts or members; a confederation; a consolidated body; a league. 

  • A data structure that can store any of various types of item, but only one at a time. 

  • A trade union; a workers' union. 

  • An association of students at a university for social and/or political purposes; also in some cases a debating body. 

  • A joint or other connection uniting parts of machinery, such as pipes. 

  • The act or state of marriage. 

  • The set containing all of the elements of two or more sets. 

  • The state of being united or joined; a state of unity or harmony. 

adj
  • Belonging to, represented by, or otherwise pertaining to a labour union. 

verb
  • To combine sets using the union operation. 

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