rudimentary vs unformed

rudimentary

adj
  • Basic; minimal; with less than, or only the minimum, necessary. 

  • Of or relating to one or more rudiments. 

noun
  • One of the rudimentary mammae of boars. 

unformed

adj
  • Not well developed. 

  • Not formed or made. 

  • Not having a definite form; shapeless; amorphous. 

  • Not grouped into any constellation. 

  • Decomposed, or resolved into parts; having the form destroyed. 

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