grizzly vs senescent

grizzly

adj
  • Grey-haired, greyish. 

  • Crying or whingeing in a bad-tempered or irritable way. 

noun
  • In hydraulic mining, a grating used to catch and throw out large stones from the sluices. 

  • A grizzly bear. 

senescent

adj
  • Characteristic of old age. 

  • That ceases to divide. 

  • Growing old; decaying with the lapse of time. 

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