bleb vs vesicle

bleb

noun
  • An irregular bulge in the plasma membrane of a cell undergoing apoptosis. 

  • A bubble, such as in paint or glass. 

  • A large vesicle or bulla, usually containing a serous fluid. 

  • A bubble-like inclusion of one mineral within another. 

verb
  • To form, or cause the formation of, blebs. 

vesicle

noun
  • A membrane-bound compartment found in a cell. 

  • A small sac or cyst or vacuole, especially one containing fluid. A blister formed in or beneath the skin, containing serum. A bleb. 

  • (usually and especially) Such a blister that is less than 5 mm in diameter. 

  • A small cavity formed in volcanic rock by entrapment of a gas bubble during solidification. 

  • A small sac filled with juice, one of many constituting the pulp of a fruit such as an orange, lemon, or grapefruit. 

  • A pocket of embryonic tissue that is the beginning of an organ. 

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