insipidity vs blandness

insipidity and blandness both are nouns.

Word	Noun	Adjective	Verb	Adverb
insipidity	Yes	No	No	No
blandness	Yes	No	No	No

As nouns, insipidity and blandness are synonyms defined as:

insipidity and blandness: lacking any distinctive or interesting taste property

Other synonyms of insipidity include insipidness.

insipidity (noun)	blandness (noun)
lacking any distinctive or interesting taste property	lacking any distinctive or interesting taste property
extreme dullness; lacking spirit or interest	the quality of being bland and gracious or ingratiating in manner
	the trait of exhibiting no personal embarrassment or concern