senselessness vs pointlessness

senselessness and pointlessness both are nouns.

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

As nouns, senselessness and pointlessness are synonyms defined as:

Other synonyms of senselessness include inanity, mindlessness, vacuity.

senselessness (noun)	pointlessness (noun)
total lack of meaning or ideas	total lack of meaning or ideas