flageolet vs shepherd's pipe

flageolet and shepherd's pipe both are nouns.

Word	Noun	Adjective	Verb	Adverb
flageolet	Yes	No	No	No
shepherd's pipe	Yes	No	No	No

As nouns, flageolet and shepherd's pipe are synonyms defined as:

flageolet and shepherd's pipe: a small fipple flute with four finger holes and two thumb holes

Other synonyms of flageolet include treble recorder.

flageolet (noun)	shepherd's pipe (noun)
a small fipple flute with four finger holes and two thumb holes	a small fipple flute with four finger holes and two thumb holes
a French bean variety with light-colored seeds; usually dried	a small bagpipe formerly popular in France