For example, you can make opposites of some words, especially adjectives, by adding the prefix -un. Okay, we can do that in English too so you're probably thinking, "so what?"
The cool thing about German is that this sometimes works with nouns.
Let me introduce you to a newly learned word that I enjoy:
This can literally mean "un-cabbage."
|Unkraut: not this!|
It actually means weed, as in the unwanted plant in one's yard.**
How fun is that? I'd like to start defining things in what they aren't.
*No, I don't think it's awful but at the beginning of learning it, I felt...lost.
**Although the more that I learn about foraging the more compassion I have for many weeds because they're EDIBLE in many cases!