eternal now vs perenniality

eternal now

noun
  • The condition in which all reality is experienced in the present, with the past contained only in memory and the future only in anticipation or speculation. 

  • The nature of God's existence which is outside of time; the nature of a soul's existence in a supposed timeless afterlife. 

perenniality

noun
  • The state of being perennial. 

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