sublease vs sublet

sublease

noun
  • A lease sublet by a tenant or lessee to a subtenant. 

verb
  • Synonym of sublet. 

sublet

noun
  • Synonym of sublease. 

verb
  • To grant a sublease out of property held under a lease. 

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