tenuous vs flimsy

tenuous is not a noun while flimsy is a noun.

Word	Noun	Adjective	Verb	Adverb
tenuous	No	Yes	No	No
flimsy	Yes	Yes	No	No

As adjectives, tenuous and flimsy are synonyms defined as:

Other synonyms of tenuous include fragile, slight, thin.

tenuous (noun)	flimsy (noun)
	a thin strong lightweight translucent paper used especially for making carbon copies

tenuous (adjective)	flimsy (adjective)
lacking substance or significance	not convincing
very thin in gauge or diameter	lacking solidity or strength
having thin consistency	lacking substance or significance