mindfulness vs attentiveness

mindfulness and attentiveness both are nouns.

Word	Noun	Adjective	Verb	Adverb
mindfulness	Yes	No	No	No
attentiveness	Yes	No	No	No

As nouns, attentiveness is a hypernym of mindfulness; that is, attentiveness is a word with a broader meaning than mindfulness:

mindfulness: the trait of staying aware of (paying close attention to) your responsibilities
attentiveness: the trait of being observant and paying attention

mindfulness (noun)	attentiveness (noun)
the trait of staying aware of (paying close attention to) your responsibilities	the trait of being considerate and thoughtful of others
	the trait of being observant and paying attention
	paying particular notice (as to children or helpless people)