unrestrained vs unbridled

unrestrained and unbridled both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unrestrained	No	Yes	No	No
unbridled	No	Yes	No	No

unrestrained (adjective)	unbridled (adjective)
not subject to restraint	not restrained or controlled
marked by uncontrolled excitement or emotion