featherbrained vs light-headed

featherbrained and light-headed both are adjectives.

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

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

featherbrained and light-headed: lacking seriousness; given to frivolity

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

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