trouser vs upper

trouser

noun
  • Of or relating to trousers. 

  • A pair of trousers. 

verb
  • To secretively steal (an item or money) for personal use. 

  • To put (money) into one's trouser pocket; to pocket. 

  • To take and keep (something, especially money, that is not one's own); to pocket. 

upper

noun
  • The piece of leather, etc., that forms the top part of a shoe above the sole. 

  • A denture or retainer for the teeth in the upper jaw. 

  • An upper berth or bunk. 

  • That which is higher, contrasted with the lower. 

  • A stimulant, such as amphetamine, that increases energy and decreases appetite. 

  • The upper portion of something 

  • Someone with higher social standing 

  • A spiritual passageway through which consciousness can reach a higher dimension. 

  • A senior student. 

  • A tooth in the upper jaw. 

  • The Y-shaped strap on flip-flops. 

adj
  • Of or pertaining to a secondary school. 

  • At a higher level, rank or position. 

  • younger, more recent 

  • Situated on higher ground, further inland, or more northerly. 

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