dualize vs plicate

dualize

verb
  • To transform into a dual carriageway. 

  • To make dual, to find or consider the dual item of a given one. 

plicate

adj
  • Folded multiple times lengthwise like a fan, usually lending stiffness to a flat structure such as a leaf; corrugated; pleated. 

verb
  • To fold or pleat (usually used in passive). 

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