thriftlessness vs improvidence

thriftlessness and improvidence both are nouns.

Word	Noun	Adjective	Verb	Adverb
thriftlessness	Yes	No	No	No
improvidence	Yes	No	No	No

As nouns, improvidence is a hypernym of thriftlessness; that is, improvidence is a word with a broader meaning than thriftlessness:

thriftlessness: the trait of wasting resources
improvidence: a lack of prudence and care by someone in the management of resources

Other hypernyms of thriftlessness include shortsightedness.

thriftlessness (noun)	improvidence (noun)
the trait of wasting resources	a lack of prudence and care by someone in the management of resources