trust deed vs legal instrument

trust deed and legal instrument both are nouns.

Word	Noun	Adjective	Verb	Adverb
trust deed	Yes	No	No	No
legal instrument	Yes	No	No	No

As nouns, legal instrument is a hypernym of trust deed; that is, legal instrument is a word with a broader meaning than trust deed:

trust deed: a written instrument legally conveying property to a trustee often used to secure an obligation such as a mortgage or promissory note
legal instrument: (law) a document that states some contractual relationship or grants some right

Other hypernyms of trust deed include instrument, legal document, official document.

trust deed (noun)	legal instrument (noun)
a written instrument legally conveying property to a trustee often used to secure an obligation such as a mortgage or promissory note	(law) a document that states some contractual relationship or grants some right