tussur vs tussah

tussur and tussah both are nouns.

Word	Noun	Adjective	Verb	Adverb
tussur	Yes	No	No	No
tussah	Yes	No	No	No

As nouns, tussur and tussah are synonyms defined as:

Other synonyms of tussur include Antheraea mylitta, tusseh, tusser, tussore.

tussur (noun)	tussah (noun)
oriental moth that produces brownish silk	oriental moth that produces brownish silk