flimsy vs tenuous

flimsy is a noun but tenuous is not a noun.

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

As adjectives, flimsy and tenuous are synonyms defined as:

Other synonyms of flimsy include fragile, slight, thin.

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

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