kindliness vs helpfulness

kindliness and helpfulness both are nouns.

Word	Noun	Adjective	Verb	Adverb
kindliness	Yes	No	No	No
helpfulness	Yes	No	No	No

As nouns, kindliness and helpfulness are synonyms defined as:

kindliness and helpfulness: friendliness evidence by a kindly and helpful disposition

kindliness (noun)	helpfulness (noun)
friendliness evidence by a kindly and helpful disposition	the property of providing useful assistance
	friendliness evidence by a kindly and helpful disposition