lusus naturae vs monstrosity

lusus naturae and monstrosity both are nouns.

Word	Noun	Adjective	Verb	Adverb
lusus naturae	Yes	No	No	No
monstrosity	Yes	No	No	No

As nouns, lusus naturae and monstrosity are synonyms defined as:

lusus naturae and monstrosity: a person or animal that is markedly unusual or deformed

Other synonyms of lusus naturae include freak, monster.

lusus naturae (noun)	monstrosity (noun)
a person or animal that is markedly unusual or deformed	something hideous or frightful
	a person or animal that is markedly unusual or deformed