bond certificate vs security

bond certificate and security both are nouns.

Word	Noun	Adjective	Verb	Adverb
bond certificate	Yes	No	No	No
security	Yes	No	No	No

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

bond certificate: a certificate of debt (usually interest-bearing or discounted) that is issued by a government or corporation in order to raise money; the issuer is required to pay a fixed sum annually until maturity and then a fixed sum to repay the principal
security: a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends

Other hypernyms of bond certificate include certificate of indebtedness, debt instrument, obligation, certificate.

bond certificate (noun)	security (noun)
a certificate of debt (usually interest-bearing or discounted) that is issued by a government or corporation in order to raise money; the issuer is required to pay a fixed sum annually until maturity and then a fixed sum to repay the principal	measures taken as a precaution against theft or espionage or sabotage etc.
	an electrical device that sets off an alarm when someone tries to break in
	a guarantee that an obligation will be met
	freedom from anxiety or fear
	a department responsible for the security of the institution's property and workers
	property that your creditor can claim in case you default on your obligation
	defense against financial failure; financial independence
	a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends
	the state of being free from danger or injury