unruffled vs tranquil

unruffled and tranquil both are adjectives.

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

As adjectives, unruffled and tranquil are synonyms defined as:

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

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

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