airheaded vs light-headed

airheaded and light-headed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
airheaded	No	Yes	No	No
light-headed	No	Yes	No	No

As adjectives, airheaded and light-headed are synonyms defined as:

Other synonyms of airheaded include dizzy, empty-headed, featherbrained, giddy, lightheaded, silly.

airheaded (adjective)	light-headed (adjective)
lacking seriousness; given to frivolity	lacking seriousness; given to frivolity
	weak and likely to lose consciousness