What's the difference between hornpike and hornpipe?

Hornpike

Definition:

Example Sentences:

Definition:

(n.) An instrument of music formerly popular in Wales, consisting of a wooden pipe, with holes at intervals. It was so called because the bell at the open end was sometimes made of horn.
(n.) A lively tune played on a hornpipe, for dancing; a tune adapted for such playing.

Example Sentences:

(1) Photograph: Allstar Prithee, avert thine brain, for this Canadian-Irish production does dance a merry hornpipe upon the very phizog of historical accuracy.
(2) The Sailor's Hornpipe interpolation Let's Go Crazy incl.
(3) The Sailor's Hornpipe interpolation Dreamer More Than This (instrumental) Colonized Mind Guitar Plectrum Electrum Chaos And Disorder Full setlist, show 2 Raspberry Beret (acoustic) Train In Vain (acoustic) Funknroll (acoustic) Pretzelbodylogic (acoustic) Play That Funky Music .