thoughtfulness vs considerateness

thoughtfulness and considerateness both are nouns.

Word	Noun	Adjective	Verb	Adverb
thoughtfulness	Yes	No	No	No
considerateness	Yes	No	No	No

As nouns, thoughtfulness and considerateness are synonyms defined as:

thoughtfulness and considerateness: kind and considerate regard for others

Other synonyms of thoughtfulness include consideration.

thoughtfulness (noun)	considerateness (noun)
a considerate and thoughtful act	kind and considerate regard for others
the trait of thinking carefully before acting
kind and considerate regard for others
a calm, lengthy, intent consideration