A fragment sentence is a partial sentence. It does not have everything it needs to be a full sentence. For example: "The dog" is a fragment.
Her teeth were full of cavities.
This is an example sentence. He understood once he read the full sentence. The accused was given a seven year sentence.
Example sentence - The firefighters expected to have full containment of the forest fire by the weekend.
After the cheese-truck over-turned on the highway, the road was full of debris.
A football with no air is heavier than a football with full air because the air adds buoyancy and makes it lighter.
Here's an example: u have an obsession with beer
I throw the garbage in the chute when I was full.
A full cylinder is heavier than empty. The cylinder is filled by weight.
A full stop is used at the end of a sentence, to indicate that the sentence has ended.
The price of the insurance on your truck will depend on the policy you get. For example it will be cheaper for just liability than for full coverage. You are looking at around $100 a month.
There may or may not be a full stop at the end of a sentence fragment. It is the grammatical content that determines whether it is a fragment. For example, 'She opened the' is a fragment, whether there is a full stop after it or not.