tin whistle vs fipple pipe

tin whistle and fipple pipe both are nouns.

Word	Noun	Adjective	Verb	Adverb
tin whistle	Yes	No	No	No
fipple pipe	Yes	No	No	No

As nouns, fipple pipe is a hypernym of tin whistle; that is, fipple pipe is a word with a broader meaning than tin whistle:

tin whistle: an inexpensive fipple flute
fipple pipe: a tubular wind instrument with 8 finger holes and a fipple mouthpiece

Other hypernyms of tin whistle include fipple flute, recorder, vertical flute.

tin whistle (noun)	fipple pipe (noun)
an inexpensive fipple flute	a tubular wind instrument with 8 finger holes and a fipple mouthpiece