logotype vs pinniped

logotype

noun
  • A single type combining two or more letters (as a ligature or otherwise). 

  • A symbol or emblem that acts as a trademark or a means of identification of an institution or other entity, usually referred to as a logo. 

pinniped

noun
  • Any of various large marine mammals belonging to the superfamily (formerly considered a suborder) Pinnipedia comprising walruses, eared seals and earless seals. 

adj
  • Pertaining to or similar to such a mammal. 

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