sepia vs Venetian red

sepia and Venetian red both are nouns.

Word	Noun	Adjective	Verb	Adverb
sepia	Yes	No	No	No
Venetian red	Yes	No	No	No

As nouns, sepia and Venetian red are synonyms defined as:

Other synonyms of sepia include burnt sienna, mahogany, reddish brown.

sepia (noun)	Venetian red (noun)
a shade of brown with a tinge of red	a shade of brown with a tinge of red
rich brown pigment prepared from the ink of cuttlefishes