moderate vs palliate

moderate

verb
  • To reduce the excessiveness of (something) 

  • To become less excessive 

  • To preside over (something) as a moderator 

  • To act as a moderator; to assist in bringing to compromise 

  • To supply with a moderator (substance that decreases the speed of neutrons in a nuclear reactor and hence increases likelihood of fission). 

adj
  • Having an intermediate position between liberal and conservative. 

  • Average priced; standard-deal 

  • more than mild, less than severe 

  • Mediocre 

  • Not violent or rigorous; temperate; mild; gentle. 

  • Not excessive; acting in moderation 

noun
  • One who holds an intermediate position between extremes, as in politics. 

  • One of a party in Scottish Church history dominant in the 18th century, lax in doctrine and discipline, but intolerant of evangelicalism and popular rights. It caused the secessions of 1733 and 1761, and its final resultant was the Disruption of 1843. 

palliate

verb
  • To placate or mollify. 

  • To cover or disguise the seriousness of (a mistake, offence etc.) by excuses and apologies. 

  • To relieve the symptoms of; to ameliorate. 

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