hackle vs shear

hackle

noun
  • An instrument with steel pins used to comb out flax or hemp. 

  • By extension (because the hackles of a rooster are lifted when it is angry), the hair on the nape of the neck in dogs and other animals; also used figuratively for humans. 

  • Any flimsy substance unspun, such as raw silk. 

  • A feather plume on some soldier's uniforms, especially the hat or helmet. 

  • A type of jagged crack extending inwards from the broken surface of a fractured material. 

  • A feather used to make a fishing lure or a fishing lure incorporating a feather. 

  • A plate with rows of pointed needles used to blend or straighten hair. 

  • One of the long, narrow feathers on the neck of birds, most noticeable on the rooster. 

verb
  • To separate, as the coarse part of flax or hemp from the fine, by drawing it through the teeth of a hackle or hatchel. 

  • To dress (flax or hemp) with a hackle; to prepare fibres of flax or hemp for spinning. 

shear

noun
  • A large machine use for cutting sheet metal. 

  • The act of shearing, or something removed by shearing. 

  • Wind shear, or an instance thereof. 

  • A transformation that displaces every point in a direction parallel to some given line by a distance proportional to the point’s distance from the line. 

  • The response of a rock to deformation usually by compressive stress, resulting in particular textures. 

  • A cutting tool similar to scissors, but often larger. 

  • Forces that push in opposite directions. 

verb
  • To deform because of forces pushing in opposite directions. 

  • To make a vertical cut in coal. 

  • To cut, originally with a sword or other bladed weapon, now usually with shears, or as if using shears. 

  • To transform by displacing every point in a direction parallel to some given line by a distance proportional to the point’s distance from the line. 

  • To remove the fleece from a sheep etc. by clipping. 

  • To cut the hair of (a person). 

  • To deprive of property; to fleece. 

  • To reap, as grain. 

  • To change in direction or speed. 

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