mindlessness vs pointlessness

mindlessness and pointlessness both are nouns.

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

As nouns, mindlessness and pointlessness are synonyms defined as:

Other synonyms of mindlessness include inanity, senselessness, vacuity.

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