flimsiness vs shoddiness

flimsiness and shoddiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
flimsiness	Yes	No	No	No
shoddiness	Yes	No	No	No

As nouns, flimsiness and shoddiness are synonyms defined as:

flimsiness and shoddiness: the property of weakness by virtue of careless construction

flimsiness (noun)	shoddiness (noun)
the property of weakness by virtue of careless construction	the property of weakness by virtue of careless construction
	the quality of being cheaply imitative of something better