misstep vs boner

misstep and boner both are nouns.

Word	Noun	Adjective	Verb	Adverb
misstep	Yes	No	No	No
boner	Yes	No	No	No

As nouns, boner is a hypernym of misstep; that is, boner is a word with a broader meaning than misstep:

Other hypernyms of misstep include bloomer, blooper, blunder, boo-boo, botch, bungle, flub, foul-up, fuckup, pratfall.

misstep (noun)	boner (noun)
an unintentional but embarrassing blunder	an embarrassing mistake