blunder vs clanger

blunder and clanger both are nouns.

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

As nouns, clanger is a hyponym of blunder; that is, clanger is a word with a more specific, narrower meaning than blunder:

blunder (noun)	clanger (noun)
an embarrassing mistake	a conspicuous mistake whose effects seem to reverberate

blunder (verb)	clanger (verb)
utter impulsively
make one's way clumsily or blindly
commit a faux pas or a fault or make a serious mistake