block vs clearance

block

noun
  • A defensive play by one or more players meant to deflect a spiked ball back to the hitter’s court. 

  • A temporary or permanent ban that prevents access to an online account or service, or connection to or from a designated telephone number, IP address, or similar. 

  • A wig block: a simplified head model upon which wigs are worn. 

  • A case or frame housing one or more sheaves (pulleys), used with ropes to increase or redirect force, for example as part of lifting gear or a sailing ship's rigging. See also block and tackle. 

  • A cellblock. 

  • The popping crease. 

  • A logical extent or region; a grouping or apportionment of like things treated together as a unit. 

  • A fixed-length group of bits making up part of a message. 

  • A logical data storage unit containing one or more physical sectors (see cluster). 

  • Solitary confinement. 

  • A section of split logs used as fuel. 

  • A blockhole. 

  • A portion of a macromolecule, comprising many units, that has at least one feature not present in adjacent portions. 

  • Something that prevents something from passing. 

  • A physical area or extent of something, often rectangular or approximately rectangular. 

  • A joined group of four (or in some cases nine) postage stamps, forming a roughly square shape. 

  • An action to interfere with the movement of an opposing player or of the object of play (ball, puck). 

  • A contiguous range of Unicode code points used to encode characters of a specific type; can be of any size evenly divisible by 16, up to 65,536 (a full plane). 

  • The perch on which a bird of prey is kept. 

  • A substantial, often approximately cuboid, piece of any substance. 

  • A mould on which hats, bonnets, etc., are shaped. 

  • A region of code in a program that acts as a single unit, such as a function or loop. 

  • A contiguous group of urban lots of property, typically several acres in extent, not crossed by public streets. 

  • The position of a player or bat when guarding the wicket. 

  • A chopping block: a cuboid base for cutting or beheading. 

  • The distance from one street to another in a city or suburb that is built (approximately) to a grid pattern. 

  • The human head. 

  • A shot played by holding the bat vertically in the path of the ball, so that it loses momentum and drops to the ground. 

  • A discrete group of vines in a vineyard, often distinguished from others by variety, clone, canopy training method, irrigation infrastructure, or some combination thereof. 

  • Interference or obstruction of cognitive processes. 

  • A set of sheets (of paper) joined together at one end, forming a cuboid shape. 

  • A roughly cuboid building. 

  • A section of a railroad where the block system is used. 

verb
  • To hit with a block. 

  • To wait for some condition to become true. 

  • To specify the positions and movements of the actors for (a section of a play or film). 

  • To prevent (something or someone) from passing. 

  • To bar (someone undesirable) from connecting via telephone, instant messaging, etc., or from accessing an online account or service, or similar. 

  • To play a block shot. 

  • To stretch or mould (a knitted item, a hat, etc.) into the desired shape. 

  • To shape or sketch out roughly. 

  • To fill or obstruct (something) so that it is not possible to pass. 

  • To impede (an opponent or opponent's play). 

  • To prevent (something from happening or someone from doing something). 

  • To bar (a message or communication), or bar connection with (an online account or service, a designated telephone number, IP address, etc.). 

clearance

noun
  • The act of kicking a ball away from the goal one is defending. 

  • The first disposal in a chain that leaves the area of a stoppage, or a disposal that leaves the area of a stoppage itself. 

  • The act of clearing or something (such as a space) cleared. 

  • A permission for a vehicle to proceed, or for a person to travel. 

  • A permission to have access to sensitive or secret documents or other information. 

  • The act of potting all the remaining balls on a table at one visit. 

  • Clear or net profit. 

  • The settlement of transactions involving securities or means of payment such as checks by means of a clearing house. 

  • A permission to use something, usually intellectual property, that is legally, but not otherwise, protected. 

  • The height or width of a tunnel, bridge or other passage, or the distance between a vehicle and the walls or roof of such passage; a gap, headroom. 

  • The distance between two moving objects, especially between parts of a machine 

  • A sale of merchandise, especially at significantly reduced prices, usually in order to make room for new merchandise or updated versions of the same merchandise. 

  • The removal of harmful substances from the blood; renal clearance. 

  • Removal of pieces from a rank, file or diagonal so that a bishop, rook or queen is free to move along it. 

  • The act of leaving the area of a stoppage. 

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