reflectivity vs thoughtfulness

reflectivity and thoughtfulness both are nouns.

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

As nouns, thoughtfulness is a hypernym of reflectivity; that is, thoughtfulness is a word with a broader meaning than reflectivity:

reflectivity (noun)	thoughtfulness (noun)
the ability to reflect beams or rays	a considerate and thoughtful act
the capability of quiet thought or contemplation	the trait of thinking carefully before acting
the fraction of radiant energy that is reflected from a surface	kind and considerate regard for others
	a calm, lengthy, intent consideration