solmisation vs solfa

solmisation and solfa both are nouns.

Word	Noun	Adjective	Verb	Adverb
solmisation	Yes	No	No	No
solfa	Yes	No	No	No

As nouns, solfa is a hyponym of solmisation; that is, solfa is a word with a more specific, narrower meaning than solmisation:

solmisation: a system of naming the notes of a musical scale by syllables instead of letters
solfa: a system of solmization using the solfa syllables: do, re, mi, fa, sol, la, ti

Other hyponyms of solmisation include tonic solfa.

solmisation (noun)	solfa (noun)
a system of naming the notes of a musical scale by syllables instead of letters	a system of solmization using the solfa syllables: do, re, mi, fa, sol, la, ti