Answer:
I am what bring things together. Without me everything you see would be a total mass or debris everywhere.
I am an instrument capable of making numerous sound but cannot be touched or seen.
I grow up while growing down
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.
I am a desire to munch
This crisp stick-shaped roll is often enjoyed with soup or marinara sauce.