assumption vs fosterage

assumption

noun
  • The act of assuming, or taking to or upon oneself; the act of taking up or adopting. 

  • A festival in honor of the ascent of the Virgin Mary into heaven, celebrated on 15 August. 

  • Assumptio. 

  • The minor or second proposition in a categorical syllogism. 

  • The act of taking for granted, or supposing a thing without proof; a supposition; an unwarrantable claim. 

  • The taking of a person up into heaven. 

  • The thing supposed; a postulate, or proposition assumed; a supposition. 

fosterage

noun
  • The act of fostering another's child as if it were one's own. 

  • The act of promoting or encouraging something. 

  • The act of caring for another human being or animal. 

  • The condition of being the foster child. 

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