tastelessness vs savourlessness

tastelessness and savourlessness both are nouns.

Word	Noun	Adjective	Verb	Adverb
tastelessness	Yes	No	No	No
savourlessness	Yes	No	No	No

As nouns, tastelessness and savourlessness are synonyms defined as:

Other synonyms of tastelessness include flavorlessness, flavourlessness, savorlessness.

tastelessness (noun)	savourlessness (noun)
inelegance indicated by a lack of good taste	the property of having no flavor
the property of having no flavor