casual vs unconcerned

casual and unconcerned both are adjectives.

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

casual (adjective)	unconcerned (adjective)
hasty and without attention to detail; not thorough	lacking in interest or care or feeling
not showing effort or strain	not occupied or engaged with
occurring on a temporary or irregular basis	easy in mind; not worried
marked by blithe unconcern
appropriate for ordinary or routine occasions
occurring or appearing or singled out by chance
natural and unstudied
characterized by a feeling of irresponsibility
without or seeming to be without plan or method; offhand