fish trap vs hand net

fish trap

noun
  • A contraption made of wires, rods, fishing-net or other suitable materials with the purpose of catching fish alive. 

hand net

noun
  • A small net that is equipped with a handle and attached to a rim so that the net forms a pouch. This kind of net is used, eg, for trapping butterflies or individual fish. 

How often have the words fish trap and hand net occurred in a corpus of books? (source: Google Ngram Viewer )