Mini and Not big

Mini adjective - Used of women's clothing; very short with hemline above the knee.

Not big and mini are semantically related in amount topic. In some cases you can use "Not big" instead an adjective "Mini", when it comes to topics like little.

Mini and not big are semantically related in amount topic. Sometimes you can use "Mini" instead an adjective phrase "Not big", if it concerns topics such as little.