bloomer vs boner

bloomer and boner both are nouns.

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

As nouns, bloomer and boner are synonyms defined as:

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

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