tranquil vs unruffled

tranquil and unruffled both are adjectives.

Word	Noun	Adjective	Verb	Adverb
tranquil	No	Yes	No	No
unruffled	No	Yes	No	No

As adjectives, tranquil and unruffled are synonyms defined as:

tranquil and unruffled: (of a body of water) free from disturbance by heavy waves

Other synonyms of tranquil include placid, quiet, smooth, still.

tranquil (adjective)	unruffled (adjective)
(of a body of water) free from disturbance by heavy waves	(of a body of water) free from disturbance by heavy waves
not agitated; without losing self-possession	free from emotional agitation or nervous tension