unspoken vs silent

unspoken and silent both are adjectives.

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

As adjectives, unspoken and silent are synonyms defined as:

Other synonyms of unspoken include mute, tongueless, wordless.

unspoken (adjective)	silent (adjective)
not made explicit	implied by or inferred from actions or statements
expressed without speech	unable to speak because of hereditary deafness
	having a frequency below or above the range of human audibility
	marked by absence of sound
	failing to speak or communicate etc when expected to
	not made to sound
	expressed without speech