Answer:
My first half means container. Not a lot of people understand my language.
I am partially baked. I am not completely lit. I am a portion of the moon. I am lesser than full wit. I am a divider of the hour. I am not a total lie. I am a sibling through one parent.
A caribbean shape that makes ships disappear.
I fly forever Rest never.
I am a tool for fairies.
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.