clear the air vs chase away

clear the air and chase away both are verbs.

Word	Noun	Adjective	Verb	Adverb
clear the air	No	No	Yes	No
chase away	No	No	Yes	No

As verbs, chase away is a hypernym of clear the air; that is, chase away is a word with a broader meaning than clear the air:

clear the air: dispel differences or negative emotions
chase away: force to go away; used both with concrete and metaphoric meanings

Other hypernyms of clear the air include dispel, drive away, drive off, drive out, run off, turn back.

clear the air (verb)	chase away (verb)
dispel differences or negative emotions	force to go away; used both with concrete and metaphoric meanings