vertical flute vs fipple pipe

vertical flute and fipple pipe both are nouns.

Word	Noun	Adjective	Verb	Adverb
vertical flute	Yes	No	No	No
fipple pipe	Yes	No	No	No

As nouns, vertical flute and fipple pipe are synonyms defined as:

vertical flute and fipple pipe: a tubular wind instrument with 8 finger holes and a fipple mouthpiece

Other synonyms of vertical flute include fipple flute, recorder.

vertical flute (noun)	fipple pipe (noun)
a tubular wind instrument with 8 finger holes and a fipple mouthpiece	a tubular wind instrument with 8 finger holes and a fipple mouthpiece