roam vs transmigrate

roam

verb
  • To wander or travel freely and with no specific destination. 

  • To use a network or service from different locations or devices. 

  • To transmit (resources) between different locations or devices, to allow comparable usage from any of them. 

  • To range or wander over. 

transmigrate

verb
  • To migrate to another country. 

  • To pass into another body after death. 

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