settle down vs steady down

settle down and steady down both are verbs.

Word	Noun	Adjective	Verb	Adverb
settle down	No	No	Yes	No
steady down	No	No	Yes	No

As verbs, settle down and steady down are synonyms defined as:

settle down and steady down: become settled or established and stable in one's residence or life style

Other synonyms of settle down include root, settle, take root.

settle down (verb)	steady down (verb)
become settled or established and stable in one's residence or life style	become settled or established and stable in one's residence or life style
become quiet or calm, especially after a state of agitation
settle into a position, usually on a surface or ground