Sabbatum vs Saturday

Sabbatum and Saturday both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sabbatum	Yes	No	No	No
Saturday	Yes	No	No	No

As nouns, Sabbatum and Saturday are synonyms defined as:

Sabbatum and Saturday: the seventh and last day of the week; observed as the Sabbath by Jews and some Christians

Other synonyms of Sabbatum include Sat.

Sabbatum (noun)	Saturday (noun)
the seventh and last day of the week; observed as the Sabbath by Jews and some Christians	the seventh and last day of the week; observed as the Sabbath by Jews and some Christians