transact vs transship

transact

verb
  • To carry over, hand over or transfer something. 

  • To do, carry through, conduct or perform some action. 

  • To exchange or trade, as of ideas, money, goods, etc. 

  • To conduct business. 

transship

verb
  • To transfer something from one vessel or conveyance to another for onward shipment. 

  • To be transferred from one vessel or conveyance to another for onward shipment. 

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