grandmother vs meemaw

grandmother

noun
  • A mother of someone's parent. 

  • A female ancestor or progenitor. 

meemaw

noun
  • Synonym of mamaw (“grandmother”) 

verb
  • To mouth words so that they can be heard over noise (or later so that they cannot be overheard), originally in the cotton industry of Lancashire. 

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