abiding vs perpetual

abiding

adj
  • Continuing or persisting in the same state: lasting, enduring; steadfast. 

noun
  • The action of one who abides; the state of an abider. 

perpetual

adj
  • Continuing; uninterrupted. 

  • Set up to be in effect or have tenure for an unlimited duration. 

  • Lasting forever, or for an indefinitely long time. 

  • Flowering throughout the growing season. 

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