silver certificate vs note

silver certificate and note both are nouns.

Word	Noun	Adjective	Verb	Adverb
silver certificate	Yes	No	No	No
note	Yes	No	Yes	No

As nouns, note is a hypernym of silver certificate; that is, note is a word with a broader meaning than silver certificate:

silver certificate: formerly a bank note issued by the United States Treasury and redeemable in silver
note: a piece of paper money (especially one issued by a central bank)

Other hypernyms of silver certificate include bank bill, bank note, banker's bill, banknote, bill, Federal Reserve note, government note, greenback.

silver certificate (noun)	note (noun)
formerly a bank note issued by the United States Treasury and redeemable in silver	a characteristic emotional quality
	a brief written record
	a comment or instruction (usually added)
	a short personal letter
	a notation representing the pitch and duration of a musical sound
	a tone of voice that shows what the speaker is feeling
	a promise to pay a specified amount on demand or at a certain time
	a piece of paper money (especially one issued by a central bank)
	high status importance owing to marked superiority

silver certificate (verb)	note (verb)
	make mention of
	make a written note of
	notice or perceive
	observe with care or pay close attention to