loosen vs tense

loosen

verb
  • To make loose. 

  • To free from restraint; to set at liberty. 

  • To become unfastened or undone. 

  • To relieve (the bowels) from constipation; to promote defecation. 

  • To become loose. 

  • To disengage (a device that restrains). 

tense

noun
  • Any of the forms of a verb which distinguish when an action or state of being occurs or exists. 

  • The property of indicating the point in time at which an action or state of being occurs or exists. 

  • An inflected form of a verb that indicates tense. 

adj
  • Pulled taut, without any slack. 

  • Showing signs of stress or strain; not relaxed. 

verb
  • To apply a tense to. 

  • To make tense. 

  • To become tense. 

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