blockade vs seal

blockade

verb
  • To create a blockade against. 

noun
  • The ships or other forces used to effect a naval blockade. 

  • Inhibition of the activity (function) of chemical messengers or their receptors, such as (often) receptor antagonism. 

  • The physical blocking or surrounding of a place, especially a port, in order to prevent commerce and traffic in or out. 

  • Any form of formal isolation or inhibition of something, especially with the force of law or arms. 

  • Preventing an opponent's pawn moving by placing a piece in front of it. 

seal

verb
  • To close by means of a seal. 

  • To place a seal on (a document). 

  • To confirm or set apart as a second or additional wife. 

  • To guarantee. 

  • To fasten (something) so that it cannot be opened without visible damage. 

  • To close securely to prevent leakage. 

  • To place in a sealed container. 

  • To prevent people or vehicles from crossing (something). 

  • To tie up animals (especially cattle) in their stalls. 

  • To mark with a stamp, as an evidence of standard exactness, legal size, or merchantable quality. 

  • To form a sacred commitment. 

  • To hunt seals. 

  • To place a notation of one's next move in a sealed envelope to be opened after an adjournment. 

  • To fix, as a piece of iron in a wall, with cement or plaster, etc. 

  • To fry (meat) at a high temperature to retain the juices. 

noun
  • An impression of such stamp on wax, paper or other material used for sealing. 

  • A bearing representing a creature something like a walrus. 

  • Anything that secures or authenticates. 

  • A tight closure, secure against leakage. 

  • Something which will be visibly damaged if a covering or container is opened, and which may or may not bear an official design. 

  • A chakra. 

  • A design or insignia usually associated with an organization or an official role. 

  • Confirmation or approval, or an indication of this. 

  • A stamp used to impress a design on a soft substance such as wax. 

  • Something designed to prevent liquids or gases from leaking through a joint. 

  • A pinniped (Pinnipedia), particularly an earless seal (true seal) or eared seal. 

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