jell vs vaseline

jell

noun

  • a jelly or gel 

verb

  • To gel 

vaseline

noun

  • Any particular kind of petroleum jelly or of any similar lubricant. 

  • Petroleum jelly. 

verb

  • To lubricate with vaseline. 

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