crofting vs gleaning

crofting

noun
  • A form of land tenure and small-scale food production, unique to the Highlands and islands of Scotland, in which individual crofts are established on the better land while a large area of poor-quality hill ground is shared by all the crofters of the township for grazing. 

  • The process of exposing linen to the sun, on the grass, in the process of bleaching. 

gleaning

noun
  • The act of collecting leftover crops from farmers' fields after they have been commercially harvested or on fields where it is not economically profitable to harvest. 

  • The catching of insects and other invertebrates by plucking them from within foliage, or sometimes from the ground. It may also be applied to where prey is picked off, or from within, natural and man-made surfaces such as rock faces and under the eaves of houses. 

  • Something learned by gleaning. 

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