halcyon vs peaceable

halcyon is a noun but peaceable is not a noun.

Word	Noun	Adjective	Verb	Adverb
halcyon	Yes	Yes	No	No
peaceable	No	Yes	No	No

halcyon (noun)	peaceable (noun)
a mythical bird said to breed at the time of the winter solstice in a nest floating on the sea and to have the power of calming the winds and waves

halcyon (adjective)	peaceable (adjective)
marked by peace and prosperity	not disturbed by strife or turmoil or war
idyllically calm and peaceful; suggesting happy tranquillity	disposed to peace or of a peaceful nature
	inclined or disposed to peace