vertical flute vs fipple flute

vertical flute and fipple flute both are nouns.

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

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

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

Other synonyms of vertical flute include fipple pipe, recorder.

vertical flute (noun)	fipple flute (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