folly vs foolery

folly and foolery both are nouns.

Word	Noun	Adjective	Verb	Adverb
folly	Yes	No	No	No
foolery	Yes	No	No	No

As nouns, folly and foolery are synonyms defined as:

Other synonyms of folly include craziness, indulgence, lunacy, tomfoolery.

folly (noun)	foolery (noun)
foolish or senseless behavior	foolish or senseless behavior
a stupid mistake
the trait of acting stupidly or rashly
the quality of being rash and foolish