hazel vs umber

hazel

adj
  • Of a greenish-brown colour. (often used to refer to eye colour) 

noun
  • The wood of a hazelnut tree. 

  • Freestone. 

  • The nut of the hazel tree. 

  • A tree or shrub of the genus Corylus, bearing edible nuts called hazelnuts or filberts. 

  • A greenish-brown colour, the colour of a ripe hazelnut. 

umber

adj
  • Of a reddish brown colour, like that of the pigment. 

verb
  • To give a reddish-brown colour to. 

noun
  • A dusky brown African wading bird (Scopus umbretta) allied to the shoebill and herons; a hamerkop. 

  • A grayling. 

  • A brown clay, somewhat darker than ochre, which contains iron and manganese oxides. 

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