cool off vs settle down

cool off and settle down both are verbs.

Word	Noun	Adjective	Verb	Adverb
cool off	No	No	Yes	No
settle down	No	No	Yes	No

As verbs, cool off and settle down are synonyms defined as:

cool off and settle down: become quiet or calm, especially after a state of agitation

Other synonyms of cool off include calm, calm down, chill out, cool it, simmer down.

cool off (verb)	settle down (verb)
lose intensity	become settled or established and stable in one's residence or life style
become quiet or calm, especially after a state of agitation	become quiet or calm, especially after a state of agitation
feel less enamoured of something or somebody	settle into a position, usually on a surface or ground