filarial vs filaria

filarial is not a noun while filaria is a noun.

Word	Noun	Adjective	Verb	Adverb
filarial	No	Yes	No	No
filaria	Yes	No	No	No

filarial (noun)	filaria (noun)
	slender threadlike roundworms living in the blood and tissues of vertebrates; transmitted as larvae by biting insects
	European weed naturalized in southwestern United States and Mexico having reddish decumbent stems with small fernlike leaves and small deep reddish-lavender flowers followed by slender fruits that stick straight up; often grown for forage

filarial (adjective)	filaria (adjective)
related to or infested with or transmitting parasitic worms especially filaria