flavorless vs vapid

flavorless and vapid both are adjectives.

Word	Noun	Adjective	Verb	Adverb
flavorless	No	Yes	No	No
vapid	No	Yes	No	No

As adjectives, flavorless and vapid are synonyms defined as:

Other synonyms of flavorless include bland, flat, flavourless, insipid, savorless, savourless.

flavorless (adjective)	vapid (adjective)
lacking taste or flavor or tang	lacking taste or flavor or tang
	lacking significance or liveliness or spirit or zest