bark1
  
  n.
 the sharp explosive cry of a dog, fox, or seal.
v.
  - (of a dog, fox, or seal) give a bark.
 - utter (a command or question) abruptly or aggressively. 
▸US call out in order to sell or advertise something.
 
 
  Phrase
  
    - one's bark is worse than one's bite
 one is not as ferocious as one seems.  - be barking up the wrong tree
 informal be pursuing a mistaken line of thought. 
   
  Etymology
  OE beorc (n.), beorcan (v.), of Gmc origin.
 
  
    
bark2
  
  n.
 the tough protective outer sheath of the trunk, branches, and twigs of a tree or woody shrub.
v.
   - strip the bark from.
 - scrape the skin off (one's shin) by accidentally hitting it.
 - tan or dye (leather or other materials) using the tannins found in bark.
 
 
  Derivative
  
  Etymology
  ME: from ON bǫrkr; perh. rel. to birch.