coffee cup vs teacup

coffee cup

noun
  • A cup, typically a small one, in which coffee can be served. 

teacup

noun
  • A small cup, usually with a handle, commonly used for drinking tea; normally sits in a saucer as part of a tea set. 

  • A unit of measure; a teacupful. 

adj
  • Of an animal, smaller than average. 

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