trust deed vs official document

trust deed and official document both are nouns.

Word	Noun	Adjective	Verb	Adverb
trust deed	Yes	No	No	No
official document	Yes	No	No	No

As nouns, official document is a hypernym of trust deed; that is, official document 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
official document: (law) a document that states some contractual relationship or grants some right

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

trust deed (noun)	official document (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