When dairy products change their chemical composition such as milk, it becomes sour to the taste.

A mechanical device used to grasp things is called a set of tongs.

The action of breaking apart something is to tear it.

Something that has a very short distance between the top and bottom is called thin.

Your journey through life is a test with many necessary blockades.

To totally satisfy an immense desire or need is said to satiate it.

To attain goods and services from a past experience is said to redeem something.

After a lot of training on something, you may be called highly skilled or proficient in it.

When something is said to rise to the top through a filter is said to percolate to the surface.

When something is unclear or not understandable is said to be opaque to you.