partially ordered set vs structure

partially ordered set

noun
  • A set that has a given, elsewhere specified partial order. 

  • The ordered pair comprising a set and its partial order. 

structure

noun
  • A set along with a collection of finitary functions and relations. 

  • The overall form or organization of something. 

  • The underlying shape of a solid. 

  • Underwater terrain or objects (such as a dead tree or a submerged car) that tend to attract fish 

  • A body, such as a political party, with a cohesive purpose or outlook. 

  • A cohesive whole built up of distinct parts. 

  • Several pieces of data treated as a unit. 

  • A set of rules defining behaviour. 

verb
  • To give structure to; to arrange. 

How often have the words partially ordered set and structure occurred in a corpus of books? (source: Google Ngram Viewer )