"Feening" and "Fiending" - is there a difference?

I often come across two words - "feening" and "fiending", especially in the context of addiction. Do they mean the same thing, or are there differences between them? It is important to understand, because I hear them in different meanings, but I have not found an exact explanation.

There are many slang expressions in English that can have different meanings depending on the context. Sometimes they mean the same thing, and sometimes they have nuances.

Although the words "feening" and "fiending" seem similar, there is a slight difference between them. "Fiending" was originally used to describe a strong desire for something, especially drugs, while "feening" is considered a corrupted version of the word popular in youth slang https://unitedrecoveryproject.com/rehab-blog/feening-vs-fiending/ . Sometimes "feening" can mean a milder form of attraction or addiction, but generally both terms are used in the same context.