sustaining pedal vs forte-piano

sustaining pedal and forte-piano both are nouns.

Word	Noun	Adjective	Verb	Adverb
sustaining pedal	Yes	No	No	No
forte-piano	Yes	No	No	No

sustaining pedal (noun)	forte-piano (noun)
a pedal on a piano that lifts the dampers from the strings and so allows them to continue vibrating	a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds