blunder vs flub

blunder and flub both are nouns.

Word	Noun	Adjective	Verb	Adverb
blunder	Yes	No	Yes	No
flub	Yes	No	Yes	No

As nouns, blunder and flub are synonyms defined as:

Other synonyms of blunder include bloomer, blooper, boner, boo-boo, botch, bungle, foul-up, fuckup, pratfall.

blunder (noun)	flub (noun)
an embarrassing mistake	an embarrassing mistake

blunder (verb)	flub (verb)
utter impulsively	make a mess of, destroy or ruin
make one's way clumsily or blindly
commit a faux pas or a fault or make a serious mistake