rugged vs rugosan

rugged

adj
  • Covered with a rug. 

  • Not neat or regular; irregular, uneven. 

  • Rough with bristly hair; shaggy. 

  • Violent; rude; boisterous 

  • Having a rug or rugs. 

  • Stormy; turbulent; tempestuous 

  • Harsh; grating; unpleasant sounding or looking 

  • Rocky and bare of plantlife. 

  • Broken into sharp or irregular points; uneven; not smooth; rough. 

  • Designed to reliably operate in harsh usage environments and conditions. 

  • Harsh; austere; hard 

  • Vigorous; robust; hardy 

  • Sour; surly; frowning; wrinkled 

  • Strong, sturdy, well-built. 

rugosan

adj
  • Synonym of rugose: describing an extinct coral of the order †Rugosa. 

noun
  • A coral from that order. 

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