alien vs gatecrasher

alien

noun
  • One excluded from certain privileges; one alienated or estranged. 

  • Any life form of extraterrestrial or extradimensional origin. 

  • A foreigner residing in a country. 

  • A person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration. 

verb
  • To estrange; to alienate. 

  • To transfer the ownership of something. 

adj
  • Not belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign. 

  • Very unfamiliar, strange, or removed. 

  • Pertaining to extraterrestrial life; typical of an extraterrestrial creature. 

gatecrasher

noun
  • A person who enters some event without a ticket or invitation, either by stealth or by deception. 

  • The groom or one of his groomsmen when partaking in the gatecrashing ritual of a traditional Chinese wedding. 

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