keep vs launch

keep

verb
  • To continue. 

  • To supply with necessities and financially support (a person). 

  • To refrain from freely disclosing (a secret). 

  • To continue in (a course or mode of action); to not intermit or fall from; to uphold or maintain. 

  • To remain edible or otherwise usable. 

  • To remain in a state. 

  • To observe; to adhere to; to fulfill; to not swerve from or violate. 

  • To raise; to care for. 

  • To have habitually in stock for sale. 

  • To act as wicket-keeper. 

  • To enter (accounts, records, etc.) in a book. 

  • To maintain the condition of; to preserve in a certain state. 

  • To restrain. 

  • To maintain (an establishment or institution); to conduct; to manage. 

  • To watch over, look after, guard, protect. 

  • To maintain possession of. 

  • To record transactions, accounts, or events in. 

  • To remain faithful to a given promise or word. 

noun
  • The state of being kept; hence, the resulting condition; case. 

  • A cap for holding something, such as a journal box, in place. 

  • The food or money required to keep someone alive and healthy; one's support, maintenance. 

  • The main tower of a castle or fortress, located within the castle walls. 

launch

verb
  • To start to operate. 

  • To cause (a vessel) to move or slide from the land or a larger vessel into the water; to set afloat. 

  • To cause (a rocket, balloon, etc., or the payload thereof) to begin its flight upward from the ground. 

  • To throw (a projectile such as a lance, dart or ball); to hurl; to propel with force. 

  • Of a ship, rocket, balloon, etc.: to depart on a voyage; to take off. 

  • To send out; to start (someone) on a mission or project; to give a start to (something); to put in operation 

  • To move with force and swiftness like a sliding from the stocks into the water; to plunge; to begin. 

  • To release; to put onto the market for sale 

  • To start (a program or feature); to execute or bring into operation. 

noun
  • The act or fact of launching (a ship/vessel, a project, a new book, etc.). 

  • A boat used to convey guests to and from a yacht. 

  • An open boat of any size powered by steam, petrol, electricity, etc. 

  • The boat of the largest size and/or of most importance belonging to a ship of war, and often called the "captain's boat" or "captain's launch". 

  • The movement of a vessel from land into the water; especially, the sliding on ways from the stocks on which it is built. (Compare: to splash a ship.) 

  • An event held to celebrate the launch of a ship/vessel, project, a new book, etc.; a launch party. 

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