dicky vs shirtfront

dicky and shirtfront both are nouns.

Word	Noun	Adjective	Verb	Adverb
dicky	Yes	Yes	No	No
shirtfront	Yes	No	No	No

As nouns, dicky and shirtfront are synonyms defined as:

dicky and shirtfront: a man's detachable insert (usually starched) to simulate the front of a shirt

Other synonyms of dicky include dickey, dickie.

dicky (noun)	shirtfront (noun)
a man's detachable insert (usually starched) to simulate the front of a shirt	a man's detachable insert (usually starched) to simulate the front of a shirt
a small third seat in the back of an old-fashioned two-seater	the front of a shirt (usually the part not covered by a jacket)

dicky (adjective)	shirtfront (adjective)
(British informal) faulty