Creating a new recipe is a series of trial and error.

He repeated trial and error to create a new recipe.

He ignored my opinion by coercion.

He has a stubborn personality and rarely changes his mind once he has made a decision.

His stubbornness sometimes causes problems.

A robbery occurred in the neighborhood last night.

I go jogging every morning before noon.

We discussed to deepen our mutual understanding.

She loves the sound of the music box.

Diamond is the hardest mineral on Earth.