heavenly vs Heaven

heavenly is not a noun while Heaven is a noun.

Word	Noun	Adjective	Verb	Adverb
heavenly	No	Yes	No	No
Heaven	Yes	No	No	No

heavenly (noun)	Heaven (noun)
	a place regarded by various beliefs as the abode of their deities; also a place where good people are believed to go after death

heavenly (adjective)	Heaven (adjective)
of or belonging to heaven or god
relating to or inhabiting a divine heaven
of or relating to the sky