dizzy vs featherbrained

dizzy and featherbrained both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dizzy	No	Yes	Yes	No
featherbrained	No	Yes	No	No

As adjectives, dizzy and featherbrained are synonyms defined as:

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

dizzy (adjective)	featherbrained (adjective)
lacking seriousness; given to frivolity	lacking seriousness; given to frivolity
having or causing a whirling sensation; liable to falling

dizzy (verb)	featherbrained (verb)
make dizzy or giddy