ectoderm vs felt

ectoderm

noun
  • Outermost of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the epidermis (skin) and nervous system of the adult. 

felt

verb
  • To cover with, or as if with, felt. 

  • To cause a player to lose all their chips. 

  • To make into felt, or a feltlike substance; to cause to adhere and mat together. 

adj
  • That has been experienced or perceived. 

noun
  • A cloth or stuff made of matted fibres of wool, or wool and fur, fulled or wrought into a compact substance by rolling and pressure, with lees or size, without spinning or weaving. 

  • A hat made of felt. 

  • A felt-tip pen. 

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