boner vs bloomer

boner and bloomer both are nouns.

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

As nouns, boner and bloomer are synonyms defined as:

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

boner (noun)	bloomer (noun)
an embarrassing mistake	an embarrassing mistake
	a flower that blooms in a particular way