Pianola vs forte-piano

Pianola and forte-piano both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pianola	Yes	No	No	No
forte-piano	Yes	No	No	No

As nouns, forte-piano is a hypernym of Pianola; that is, forte-piano is a word with a broader meaning than Pianola:

Pianola: a mechanically operated piano that uses a roll of perforated paper to activate the keys
forte-piano: a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds

Other hypernyms of Pianola include piano, pianoforte.

Pianola (noun)	forte-piano (noun)
a mechanically operated piano that uses a roll of perforated paper to activate the keys	a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds