grateful vs glad

grateful is not a noun while glad is a noun.

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

grateful (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

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