tsarina vs czarina

tsarina and czarina both are nouns.

Word	Noun	Adjective	Verb	Adverb
tsarina	Yes	No	No	No
czarina	Yes	No	No	No

As nouns, tsarina and czarina are synonyms defined as:

Other synonyms of tsarina include czaritza, tsaritsa, tzarina.

tsarina (noun)	czarina (noun)
the wife or widow of a czar	the wife or widow of a czar