Words can mean different things

Language is really, really complicated, and it's extremely difficult to simplify it sometimes because most words can mean very different things depending on how they're used.

Words like despite, confirm, and bearing can't be easily simplified because it's difficult for a computer to figure out what these words mean in a sentence.

Here's an example. The word bearing can mean "direction":

In hopes of finding the lost hikers, we proceeded on the same bearing.

Or, it can mean "tolerating":

She sometimes thought she'd never survive the pain she was bearing.

Because of this sort of thing, we sometimes choose to leave a word alone because of the risk of creating sentences that make no sense, like these:

The plane was tolerating, without further incident, northeasterly through the blue sky. 

Miraculously, the roof beams were direction the heavy weight of the wet snow on the roof.

Sometimes, we can rewordify common expressions that use these multiple-meaning words. For example, the expression bearing up under always means "tolerating". But sometimes we don't get lucky, and we leave the word alone for readers to learn.