Dominicus vs Lord's Day

Dominicus and Lord's Day both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dominicus	Yes	No	No	No
Lord's Day	Yes	No	No	No

As nouns, Dominicus and Lord's Day are synonyms defined as:

Dominicus and Lord's Day: first day of the week; observed as a day of rest and worship by most Christians

Other synonyms of Dominicus include Sun, Sunday.

Dominicus (noun)	Lord's Day (noun)
first day of the week; observed as a day of rest and worship by most Christians	first day of the week; observed as a day of rest and worship by most Christians