glee vs gleefulness

glee and gleefulness both are nouns.

Word	Noun	Adjective	Verb	Adverb
glee	Yes	No	No	No
gleefulness	Yes	No	No	No

As nouns, glee and gleefulness are synonyms defined as:

Other synonyms of glee include hilarity, mirth, mirthfulness.

glee (noun)	gleefulness (noun)
great merriment	great merriment
malicious satisfaction