pejoration vs wasting

pejoration

noun
  • The act or process of becoming worse; worsening or degeneration. 

  • The process by which a word acquires a more negative meaning over time. 

wasting

noun
  • Gradual deterioration or wasting away. 

  • The act by which something is laid waste; destruction. 

adj
  • Causing a waste, or wasting away; causing pronounced loss of body mass. 

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