Unclear Description: Arc Villain

Alright, so this is a thing that has been boiling up in me for a very long time.

I have never been a fan of how when tropers add Arc Villain, they remove the Big Bad trope already there. While Arc Villain theoretically seems to be a subtrope of Big Bad, it is not listed as such. Because of that, I do not think that tropers should remove a Big Bad entry for an Arc Villain entry, especially without an edit reason. I have had trouble with that on Characters.Fairy Tail, and even though I posted in discussion, no one ever responded to me (keep in mind, the character whom the editors insist is the "true" Big Bad barely has any involvement until the final arc).

I think that has to do with the discription of Arc Villain:

This is a bit ambiguous as to the relationship with Big Bad, and that confuses me, and probably lots of others.

However, now I see this on Characters.The Spectacular Spider Man

• Arc Villain: While he's a central antagonist who is prominent throughout the show, he only takes the Big Bad role directly in the Economics 101 story arc (episodes 4-6) in season 1, and later Criminology 101 (episodes 8-10) in season 2 with Doctor Octopus and Silvermane as one of the three major crime bosses vying for control of Manhattan.

That entry admits that the villain (Tombstone) is a major villain throughout the whole series, which should techically deny the trope as Arc Villain. What's worse is on the same sheet:

• Overarching Villain: Tombstone is a very prominent figure throughout the series, being one of the most difficult foes Spidey has faced, not just because of his cunning, but because of his influence as the top crime lord in New York. As such, it takes the entire two seasons just to put him in jail, and even then, it's only briefly.

That makes no sense. Arc Villain means that the villain disappears after their arc is done, but Tombstone and all other villains in the series stick around.

Also, though the description says that there is no The Man Behind the Man with Arc Villain, Zhao from Avatar: The Last Airbender is listed though he works for another villain. That is also confusing.

I don't know, it feels that there are a lot of entries of villains that recur, which judging by the description for Arc Villain shouldn't even apply. It's rather annoying that there seems to be multiple interpretations.

Sorry, but we need a lot more evidence than this to justify a thread. Declining.