mindlessness vs senselessness

mindlessness and senselessness both are nouns.

Word	Noun	Adjective	Verb	Adverb
mindlessness	Yes	No	No	No
senselessness	Yes	No	No	No

As nouns, mindlessness and senselessness are synonyms defined as:

Other synonyms of mindlessness include inanity, pointlessness, vacuity.

mindlessness (noun)	senselessness (noun)
the trait of acting rashly and without prudence	total lack of meaning or ideas
total lack of meaning or ideas