gladly vs glad

gladly is not a noun while glad is a noun.

Word	Noun	Adjective	Verb	Adverb
gladly	No	No	No	Yes
glad	Yes	Yes	No	No

gladly (noun)	glad (noun)
	any of numerous plants of the genus Gladiolus native chiefly to tropical and South Africa having sword-shaped leaves and one-sided spikes of brightly colored funnel-shaped flowers; widely cultivated

gladly (adjective)	glad (adjective)
	showing or causing joy and pleasure; especially made happy
	cheerful and bright
	feeling happy appreciation
	eagerly disposed to act or to be of service

gladly (adverb)	glad (adverb)
with pleasure