voiceless vs breathed

voiceless and breathed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
voiceless	No	Yes	No	No
breathed	No	Yes	No	No

As adjectives, voiceless and breathed are synonyms defined as:

voiceless (adjective)	breathed (adjective)
deprived of the rights of citizenship especially the right to vote	uttered without voice
produced without vibration of the vocal cords
being without sound through injury or illness and thus incapable of all but whispered speech
uttered without voice