article vs uncertainty

article

verb
  • To bind by articles of apprenticeship. 

  • To formulate in articles; to set forth in distinct particulars. 

noun
  • A section of a legal document, bylaws, etc. or, in the plural, the entire document seen as a collection of these. 

  • A piece of nonfictional writing such as a story, report, opinion piece, or entry in a newspaper, magazine, journal, dictionary, encyclopedia, etc. 

  • A genuine article. 

  • A part or segment of something joined to other parts, or, in combination, forming a structured set. 

  • An object, a member of a group or class. 

  • A part of speech that indicates, specifies and limits a noun (a, an, or the in English). In some languages the article may appear as an ending (e.g. definite article in Swedish) or there may be none (e.g. Russian, Pashto). 

uncertainty

noun
  • Doubt; the condition of being uncertain or without conviction. 

  • A parameter that measures the dispersion of a range of measured values. 

  • Something uncertain or ambiguous. 

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