fob vs flim-flam

fob is a noun but flim-flam is not a noun.

Word	Noun	Adjective	Verb	Adverb
fob	Yes	No	Yes	No
flim-flam	No	No	Yes	No

As verbs, fob and flim-flam are synonyms defined as:

Other synonyms of fob include fox, play a joke on, play a trick on, play tricks, pull a fast one on, trick.

fob (noun)	flim-flam (noun)
short chain or ribbon attaching a pocket watch to a man's vest
an adornment that hangs from a watch chain
a vest pocket to hold a pocket watch

fob (verb)	flim-flam (verb)
deceive somebody	deceive somebody