funday vs Dominicus

funday and Dominicus both are nouns.

Word	Noun	Adjective	Verb	Adverb
funday	Yes	No	No	No
Dominicus	Yes	No	No	No

As nouns, Dominicus is a hypernym of funday; that is, Dominicus is a word with a broader meaning than funday:

funday: Sunday as a day for relaxing and having fun
Dominicus: first day of the week; observed as a day of rest and worship by most Christians

Other hypernyms of funday include Lord's Day, Sun, Sunday.

funday (noun)	Dominicus (noun)
Sunday as a day for relaxing and having fun	first day of the week; observed as a day of rest and worship by most Christians