spectacle vs naumachia

spectacle and naumachia both are nouns.

Word	Noun	Adjective	Verb	Adverb
spectacle	Yes	No	No	No
naumachia	Yes	No	No	No

As nouns, naumachia is a hyponym of spectacle; that is, naumachia is a word with a more specific, narrower meaning than spectacle:

spectacle: an elaborate and remarkable display on a lavish scale
naumachia: a naval spectacle; a mock sea battle put on by the ancient Romans

Other hyponyms of spectacle include bullfight, corrida, naumachy.

spectacle (noun)	naumachia (noun)
a blunder that makes you look ridiculous; used in the phrase `make a spectacle of' yourself	a naval spectacle; a mock sea battle put on by the ancient Romans
an elaborate and remarkable display on a lavish scale
something or someone seen (especially a notable or unusual sight)