lath vs summer (tree)

lath

noun
  • A thin, narrow strip, fastened to the rafters, studs, or floor beams of a building, for the purpose of supporting a covering of tiles, plastering, etc. 

  • Microscopic, needle-like crystals, usually of plagioclase feldspar, in a glassy groundmass 

verb
  • to cover or line with laths 

summer (tree)

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