"Concerned" is a word that is synonymous (means the same as) the word "worried". If someone is concerned for you, he/she is worried for you, and he/she probably cares about you and wants to let you know that something is wrong with a current situation.
Unfazed means not affected or disturbed by something. Basically, it refers to staying calm and unaffected even in challenging or difficult situations.
It appears there may be a typo; the word "axious" does not have a standard meaning in English. It may be a misspelling of "anxious," which means feeling nervous or worried about something.
It means that you are worried about something.
The correct idiom is a bee in your bonnet. The image is of a bee flying around inside your hat, worrying you.
Neither!worriied means your scared something bad will happen
Anxious
It means something that frightens you, makes you feel unsettled and worried.
worried
In my opinion it means that you aren't worried about something but it doesn't mean that just because you are not worried, that you don't care. It means that you have interest but no worries.
I assume you mean the word "distraught", which means to be very upset & worried.
Adundance is not a word. Abundance, which you may mean, is a word. It means there is a lot of something. It means there is plenty of something.