bald spot vs holiday

bald spot

noun
  • An area where a covering layer is absent; for example, a place where there is a break in the forest covering an area, or where snow has melted. 

  • An area on the head which, due to hair loss, has little or no hair. 

holiday

noun
  • A gap in coverage, e.g. of paint on a surface, or sonar imagery. 

  • A day declared free from work by the state or government. 

  • A period during which, by agreement, the usual payments are not made. 

  • A period of one or more days taken off work for leisure and often travel; often plural. 

  • A day on which a festival, religious event, or national celebration is traditionally observed. 

  • A period during which pupils do not attend their school; often plural; rarely used for students at university (usually: vacation). 

verb
  • To spend a period of time in recreational travel. 

  • To take a period of time away from work or study. 

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