a cappella vs stag

a cappella

adv
  • In a manner of a choir with no instrumental accompaniment; literally, "in the style of the (Sistine) Chapel (in Rome)", such as a musical Mass done a cappella. 

adj
  • Singing solely or mainly without instrumental accompaniment. 

  • Related to a form of purely vocal music mostly associated with American college performance groups. 

noun
  • A vocal performance with no instrumental accompaniment. 

stag

adv
  • Of a man, attending a formal social function without a date. 

verb
  • To act as a "stag", an irregular dealer in stocks. 

  • To watch; to dog, or keep track of. 

noun
  • An adult male deer. 

  • An outside irregular dealer in stocks, who is not a member of the exchange. 

  • Guard duty. 

  • One who applies for the allotment of shares in new projects, with a view to sell immediately at a premium, and not to hold the stock. 

  • An unmarried man; a bachelor; a man not accompanying a woman at a social event. 

  • A stag beetle (family Lucanidae). 

  • A colt, or filly. 

  • A social event for men held in honor of a groom on the eve of his wedding, attended by male friends of the groom; sometimes a fundraiser. 

  • The Eurasian wren, Troglodytes troglodytes. 

  • An improperly or late castrated bull or ram – also called a bull seg (see note under ox). 

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