disparagement vs Rattus norvegicus

disparagement and Rattus norvegicus both are nouns.

Word	Noun	Adjective	Verb	Adverb
disparagement	Yes	No	No	No
Rattus norvegicus	Yes	No	No	No

disparagement (noun)	Rattus norvegicus (noun)
the act of speaking contemptuously of	common domestic rat; serious pest worldwide
a communication that belittles somebody or something