Ocher vs Umber - What's the difference?

As nouns the difference between ocher and umber

is that ocher is while umber is a brown clay, somewhat darker than ochre, which contains iron and manganese oxides.

of a reddish brown colour, like that of the pigment.

(en noun)

* 1973 July, Melville Bell Grosvenor, Homeward with Ulysses'', published in ''National Geographic , volume 144, number 1:

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(wikipedia umber)

* (obsolete)

(en noun)

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

A grayling.

A dusky brown African wading bird (Scopus umbretta ) allied to the storks and herons.

(-)

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

* J. R. Drake

Their harps are of the umber shade / That hides the blush of waking day.

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