Here is a similar snippet to the last one, except this time the first clause is short and punchy, and the second clause is more expansive.
In Somalia, family is everything; relationships are as essential as water and milk.
Notice how in the first clause Waris Dirie makes a big claim, almost like stating a rule.
In the second clause she expands on the rule, reinforcing it by using a simile: … relationships are as essential as water and milk.
In Australia, everyone learns to swim; public pools are as common as soccer fields.
In this school, effort is everything; hard work is the only road to success.
I can't stand horror movies; terror is one flavour of ice-cream I don't care to buy.