buccal cavity vs buttonhole

buccal cavity

noun
  • The oral cavity, bound by the cheeks of the face, the palate, and the flesh of the mandible, opening onto the mouth and the fauces, and containing the teeth, tongue, gums, and other structures. 

  • The first part of the stomodaeum, lying just within the mouth; its dilator muscles arising on the clypeus, and inserted before the frontal ganglion and its connectives. 

buttonhole

noun
  • The mouth and/or nose and/or eyes if appearing tiny. 

  • A small slot-like cut or incision, made for example by an accident with the scalpel. 

  • So shaped that it can be worn on a buttonhole or it is similar to a buttonhole. 

  • A flower worn in a buttonhole for decoration. 

  • A hole through which a button is pushed to secure a garment or some part of one. 

  • anus, batty hole. 

verb
  • To detain (a person) in conversation against their will. 

  • To cut one or more buttonholes (in). 

  • To sew by buttonhole stitch. 

  • To apply a flowery formation in. 

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