unspoken vs unexpressed

unspoken and unexpressed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unspoken	No	Yes	No	No
unexpressed	No	Yes	No	No

As adjectives, unspoken and unexpressed are synonyms defined as:

Other synonyms of unspoken include unsaid, unstated, unuttered, unverbalised, unverbalized, unvoiced.

unspoken (adjective)	unexpressed (adjective)
not made explicit	not made explicit
expressed without speech