mother vs placenta

mother

noun
  • A pregnant female, possibly as a shortened form of mother-to-be; a female who gestates a baby. 

  • A female parent, sometimes especially a human; a female who parents a child (which she has given birth to, adopted, or fostered). 

  • A female who has given birth to a baby; this person in relation to her child or children. 

  • The principal piece of an astrolabe, into which the others are fixed. 

  • A striking example. 

  • Dregs, lees; a stringy, mucilaginous or film- or membrane-like substance (consisting of acetobacters) which develops in fermenting alcoholic liquids (such as wine, or cider), and turns the alcohol into acetic acid with the help of oxygen from the air. 

  • Motherfucker. 

  • The female superior or head of a religious house; an abbess, etc. 

  • A female who donates a fertilized egg or donates a body cell which has resulted in a clone. 

  • A source or origin. 

  • A locomotive which provides electrical power for a slug. 

  • A disc produced from the electrotyped master, used in manufacturing phonograph records. 

  • Something that is the greatest or most significant of its kind. (See mother of all.) 

  • A female ancestor. 

  • Any elderly woman, especially within a particular community. 

  • Any person or entity which performs mothering. 

verb
  • To treat as a mother would be expected to treat her child; to nurture. 

  • To develop mother. 

  • To give birth to or produce (as its female parent) a child. (Compare father.) 

  • To cause to contain mother (“that substance which develops in fermenting alcohol and turns it into vinegar”). 

placenta

noun
  • An organ in most mammals during gestation that supplies food and oxygen to the foetus and passes back waste. It is on wall of the uterus and links to the foetus through the umbilical cord. It is expelled after birth. 

  • In flowering plants, the part of the ovary where ovules develop; in non-flowering plants where the spores develop. 

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