mirthfulness vs glee

mirthfulness and glee both are nouns.

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

As nouns, mirthfulness and glee are synonyms defined as:

Other synonyms of mirthfulness include gleefulness, hilarity, mirth.

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