unconcerned vs blithe

unconcerned and blithe both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unconcerned	No	Yes	No	No
blithe	No	Yes	No	No

unconcerned (adjective)	blithe (adjective)
lacking in interest or care or feeling	carefree and happy and lighthearted
not occupied or engaged with	lacking or showing a lack of due concern
easy in mind; not worried